Solved blank screen on start up till windows starts

Cooler master Storm sniper black edition...
February 24, 2012 at 19:21:11
Specs: Windows 7 ultimate 64 bit, AMD Phenom IIx4 940 Processor 3.00 ghz / 4 GHZ RAM
when i start my PC it powers up but the screen doesn't come on until the welcome to windows message appears - there's no logo/splash screen or choices for bios/safe mode or even any PC info....etc just a black screen - recently i have a few issues with pc mainly loss of internet connection (error 651) and a few other things so i just want to re-install windows a fresh and start again - but I can't press anything cos i can't see what it does - i've tried an unattended boot up disc but you still need to click yes/no and choose what to partition/delete and clearly I can't install anything if the monitor isn't on - so please help - what am i missing??? I have average(ish) pc knowledge and through trial and error normally sort things out but this has me stumped

See More: blank screen on start up till windows starts

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✔ Best Answer
February 26, 2012 at 10:14:33
"Board: ASUSTeK Computer INC. CROSSHAIR II FORMULA 1.XX"

Your mboard (abbreviation for motherboard) / main chipset has a video adapter built into the mboard = onboard video, and the mboard has three PCI-E X16 slots that you can install up to three video CARDS in.

"Display
NVIDIA GeForce 7900 GT/GTO [Display adapter]
NVIDIA nForce 980a/780a SLI [Display adapter]"

You have two display (video) adapters, but only ONE video (graphics) CARD.

A video CARD is a video adapter on a physical printed circuit board that you can install in a mboard slot, and is removable.
Your onboard video is a video adapter but it's NOT a video CARD !
....

"ASUSTeK Computer INC. CROSSHAIR II FORMULA 1.XX"

Crosshair II Formula (Asus home support page)
http://www.asus.com/Motherboards/AM...

Specs - Excerpts..

Chipset: NVIDIA nForce®780a SLI™ Chipset

VGA
Integrated graphics
Multi VGA output support: DVI & D-Sub

Accessories

3-Way SLI Bridge
SLI Bridge
....

Your "NVIDIA nForce®780a SLI™ Chipset" supports.....
- two or three NVidia video adapters running in SLI mode, in Vista or Windows 7 ONLY.

- Hybrid video - the onboard video working along with a video adapter that's been installed in a PCI-E X16 slot on the mboard, in Vista or Windows 7 ONLY, RATHER THAN than the onboard video being automatically disabled when you install a video card in a PCI-E X16 slot which is the usual case for most main chipsets. that have onboard video.

HOWEVER, the video chipset on the video card installed in a PCI-E X16 slot must be compatible with the main chipset's support for Hybrid video.
Your "NVIDIA GeForce 7900 GT/GTO [Display adapter]" is NOT one of the NVidia video chipsets that is compatible with that feature.

I'm assuming that you are plugging the computer monitor, or input on the TV, into video ports on the " NVIDIA GeForce 7900 GT/GTO [Display adapter]" - on the video CARD in a slot space further down on the back of your case

I haven't had any experience with Nvidia's Hybrid video feature, but I HAVE had experience with AMD's Hybrid video feature, on two different Asus mboards that have a main chipset that supports Hybrid video, that had a video card installed in a PCI-E X16 slot.that had a video chipset that WAS NOT supported by that Hybrid video feature.
- with default mboard bios settings, the video CARD in the mboard slot produced NO VIDEO while booting.
- I found the video ports for the onboard video were STILL PRODUCING VIDEO.

In order to get the video CARD in the mboard PCI-E X16 slot to produce video while booting, I had to change either two or one default setting(s) in the mboard's bios Setup
- to DISABLE the onboard video
- to make sure the Primary video or similar was set to a PCI-E X16 slot,
, then Save bios settings

You will probably find, when the 7900 video CARD is installed in a slot, if you connect a monitor or your TV's input to a port for the onboard video, it IS still producing video, and you DO get video from it while booting BEFORE Windows loads.

(DO NOT plug in or unplug a monitor or the TV into / from a VGA or DVI port while the computer is running !)

Then you need to go into the bios and probably change one or more settings.

I downloaded the manual for your mboard and looked at it.

This is probably what you need to do....

In your mboard's bios Setup...

Advanced tab

Onboard Device Configuration

Hybrid SLI mode

Hybrid Support - MUST be set to DISABLED

Onboard GPU - MUST be set to Auto

Primary Display Adapter - MUST be set to PCI-E

Save bios settings.
....

Shut off the computer.

Move the monitor's or TV's connection to a port on the video CARD installed in a slot space on the back of the case.

Start up the computer.
You probably WILL have video while booting BEFORE Windows loads.
......

Notes
- If you use a HDMI connection, we HAVE see some instances where someone who started a subject here got NO VIDEO while booting BEFORE Windows loads, yet a VGA or DVI connection works fine. We have no idea why that is.

- you will get no video from the onboard video ports after changing those settings If you want to use the onboard video again, you will need to either
- change settings in the bios when the monitor is connected to a video CARD
- or - remove the Cmos battery, install it again,
or move the Clear Cmos jumper on the mboard to the Clear position, move it back to the "normal" position
...to set the bios settings back to defaults, and you will need to set the current Time and Date in the bios, Save bios settings.
..................................................

HDMI has the same video output as a DVI video connection, but also has the wiring for audio integrated into the connection.
A DVI or VGA connection has no support for audio built into the connection. .
- for the TV, you have to also connect (a) cable(s) for audio to the TV's sound input(s) from your computer's audio adapter output port(s)
E.g. connect between an 1/8" stereo jack on both the sound adapter and TV, or between an 1/8*' stereo jack on the sound adapter to a pair of two mono RCA jacks , red and white, on the TV
- or - you connect amplified speakers meant for computers to the proper sound adapter ports on your computer (you will probably hear nothing from un-amplifiied speakers).

(NOTE - the front line out - headphones - stereo port on a desktop case may NOT work - that requires that you have connected the wiring from that port to a header on the mbord properly, and you MAY also need to change a default setting in the bios for the type of sound - AC '97 or HD - depending on which type the case wiring supports.
To avoid that possibility, plug into (a) audio output port(s) on the BACK of the case.)

Windows allows you to have more than one sound adapter installed on the computer, but only one of them can be used at any one time.
Also, Windows can only output sound one way at a time.

If you get no sound when you're using a VGA or DVI connection when you connect your audio adapter's output port(s) to the RIGHT audio input port(s) on the TV that go along with the video input port, or when you connect the sound adapter to amplified speakers, then you probably need to change the audio output source from HDMI to something else in the settings for your sound adapter in Windows.
+
Sound settings in Vista or Windows 7....

See Response 6 in this
http://www.computing.net/answers/ha...

starting at

" Make sure you don't have volumes set too low or muted, for things you want to hear or use.... "

Note that the sound is Muted if the blue speaker icon has a red circle icon with a diagonal bar.

E.g.
On my computer that has MCE 2005 / Vista Home Premium on it, the mboard's onboard video has a HDMI port, but I am not using it at present.

In Vista, in Sound - Playback settings, I have a listing for "Digital Output Device (HDMI)" but it is NOT the default device.

The default device has the green circle with a white checmark on it - in my case that's beside Speakers.

I suspect your HDMI output is the default in your Playback settings.

When you're using a VGA or DVI connection, that must be set to something else.

To change which sound source is the default, RIGHT click on something else that is not the default, e.g. you probably need to select Speakers in your case, and select Set as Default or similar.



#1
February 24, 2012 at 23:23:46
Sounds like the monitor is not capable of displaying the basic resolution used in BIOS and only shows when windows has booted up with advanced graphics drivers running. We would need to know a bit more about your hardware including what graphics card and what model monitor you are running.

Please also note your question was posted in the XP forum but your system credentials say you are running Win7. Expect the moderators to relocate this thread.

Goin' Fishin' (Some day)


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#2
February 25, 2012 at 11:11:22
Thanks for getting back to me Richard59 - well mostly I use a 37" LCD HD Sony TV (model no KDL 37P3020) mostly connected via HDMI but i've also tried the VGA pc connector but same result, but i've also used the following plug and play monitors both connected via VGA cable with exactly the same happening - Acer AL1913, Emachines 17T4-uk - as I say using both of these monitors the PC powers on and nothing happens on the screen until the welcome to windows message and the tune plays. The graphics card installed on the pc is Nvidia Geforce 7900 GT/GTO and Nvidia NForce 980a/780a SLI - i'm guessing that there is some sort of conflict/install error with these as every time I turn the pc on I have to adjust the screen resolution by right click/screen resolution detect/ok - or otherwise any programme I open shoots of the side of the screen and I have to fish about off screen trying to drag the window back.
The original reason I wanted to re-install was due to losing internet connection due to 651 error and everything I tried to fix/re-establish it I got nowhere - so I though maybe a virus/worm/root kit..etc so to hell with it i'll just re-install and fix that way. But I ended up fixing the problem (well maybe - or it just sorted itself out) was to delete network card and scan for hardware change and let windows itself find/install and configure the connection which it did and hey presto working again - so even though at the mo I don't need to know about the blank/black screen issue on start up maybe it'll come in usefull for the future so any hints/ tips will be gratefully appreciated

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#3
February 25, 2012 at 12:27:52
Going by the things you've said.....

If you had only ONE video card installed at any one time, the ONLY thing that can cause your symptoms is the circuits on the video card are DAMAGED such that the built in ability of those to display basic VGA while booting (without needing drivers from the hard drive) BEFORE Windows loads is NOT working, yet the advanced features of the circuits enabled by the specific drivers you have loaded in Windows ARE working.

We have only rarely heard of that situation, but we HAVE heard of it.

In that case, if the video adapter is on an actual card in a slot, replacing it with an undamaged video card will cure your problem.
....

If you always had the same TWO video cards or video adapters installed, that's a different matter.

DO you have two physical video cards installed in two slots on the mboard ?


You haven't told us which mboard model you have.


Whether your mboard can support two NVidia video chipset cards or video adapters running in SLI mode depends on whether the mboard's main chipset supports SLI mode. E.g. Many AMD and Intel main chipsets cannot support them running in SLI mode, but some can.

If the main chipset DOES NOT support SLI mode, then you can't connect the two cards together usig a SLI cable - SLI mode cannot work, and doing so will probably cause you problems

If the main chipset DOES support SLI mode, there are probably combos of NVidia video chipsets that CAN work properly together in SLI mode, and other combos that CANNOT.
In that case, remove one video card at a time to see what happens.


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Related Solutions

#4
February 25, 2012 at 17:21:38
Right heres what is on my pc

Operating System
Windows 7 Ultimate (x64) (build 7600)
Install Language: English (United States)
System Locale: English (United Kingdom)
Installed: 31/01/2010 17:09:40

Processor a
3.00 gigahertz AMD Phenom II X4 940
256 kilobyte primary memory cache
1024 kilobyte secondary memory cache
64-bit ready
Multi-core (4 total)
Not hyper-threaded

Main Circuit Board b
Board: ASUSTeK Computer INC. CROSSHAIR II FORMULA 1.XX
Bus Clock: 200 megahertz
BIOS: Phoenix Technologies, LTD ASUS CROSSHAIR II FORMULA ACPI BIOS Revision 2003

Drives
500.00 Gigabytes Usable Hard Drive Capacity
440.06 Gigabytes Hard Drive Free Space
HL-DT-ST DVD-RAM GSA-H55N ATA Device [Optical drive]
SAMSUNG HD501LJ [Hard drive] (500.11 GB) -- drive 0, s/n S0MUJ1EP938891, rev CR100-11

Memory Modules
3840 Megabytes Usable Installed Memory
Slot 'DIMM_A1' has 2048 MB
Slot 'DIMM_B1' has 2048 MB
Slot 'DIMM_A2' is Empty
Slot 'DIMM_B2' is Empty

Controllers
ATA Channel 0 [Controller] (2x)
ATA Channel 1 [Controller] (2x)
Standard Dual Channel PCI IDE Controller (2x)

Bus Adapters
Standard Enhanced PCI to USB Host Controller (2x)
Standard OpenHCD USB Host Controller (2x)

Display
NVIDIA GeForce 7900 GT/GTO [Display adapter]
NVIDIA nForce 980a/780a SLI [Display adapter]
SONY TV [Monitor] (72.3"vis)

Multimedia
NVIDIA High Definition Audio

Other Devices
VIA 1394 OHCI Compliant Host Controller
USB Input Device
Standard PS/2 Keyboard
HID-compliant mouse
USB Root Hub (4x)
Generic volume shadow copy

Thats all that I can find without opening it up - hope it helps

Also i failed to mention earlier when the pc is connected to a monitor with the vga pc cable - i simply cannot get any sound, i've tried connecting the speakers in every conceivable way but no joy i've sort of figured that the on board sound card/adapter has been disconnected to allow the hdmi as I only get audio/sound when connected via HDMI - I got the pc off a mate who has upgraded to a better one - he had this one custom made a few years ago as he says the ones you can buy in shops are rubbish and how I have it set up now is how he gave it to me - so any errors/conflicts within the machine is not down to me - as I mentioned earlier I have limited pc knowledge and most things I can sort myself (with some helpful hints that is) so anything too technical will have me scratching my head and turning to beer....


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#5
February 26, 2012 at 10:14:33
✔ Best Answer
"Board: ASUSTeK Computer INC. CROSSHAIR II FORMULA 1.XX"

Your mboard (abbreviation for motherboard) / main chipset has a video adapter built into the mboard = onboard video, and the mboard has three PCI-E X16 slots that you can install up to three video CARDS in.

"Display
NVIDIA GeForce 7900 GT/GTO [Display adapter]
NVIDIA nForce 980a/780a SLI [Display adapter]"

You have two display (video) adapters, but only ONE video (graphics) CARD.

A video CARD is a video adapter on a physical printed circuit board that you can install in a mboard slot, and is removable.
Your onboard video is a video adapter but it's NOT a video CARD !
....

"ASUSTeK Computer INC. CROSSHAIR II FORMULA 1.XX"

Crosshair II Formula (Asus home support page)
http://www.asus.com/Motherboards/AM...

Specs - Excerpts..

Chipset: NVIDIA nForce®780a SLI™ Chipset

VGA
Integrated graphics
Multi VGA output support: DVI & D-Sub

Accessories

3-Way SLI Bridge
SLI Bridge
....

Your "NVIDIA nForce®780a SLI™ Chipset" supports.....
- two or three NVidia video adapters running in SLI mode, in Vista or Windows 7 ONLY.

- Hybrid video - the onboard video working along with a video adapter that's been installed in a PCI-E X16 slot on the mboard, in Vista or Windows 7 ONLY, RATHER THAN than the onboard video being automatically disabled when you install a video card in a PCI-E X16 slot which is the usual case for most main chipsets. that have onboard video.

HOWEVER, the video chipset on the video card installed in a PCI-E X16 slot must be compatible with the main chipset's support for Hybrid video.
Your "NVIDIA GeForce 7900 GT/GTO [Display adapter]" is NOT one of the NVidia video chipsets that is compatible with that feature.

I'm assuming that you are plugging the computer monitor, or input on the TV, into video ports on the " NVIDIA GeForce 7900 GT/GTO [Display adapter]" - on the video CARD in a slot space further down on the back of your case

I haven't had any experience with Nvidia's Hybrid video feature, but I HAVE had experience with AMD's Hybrid video feature, on two different Asus mboards that have a main chipset that supports Hybrid video, that had a video card installed in a PCI-E X16 slot.that had a video chipset that WAS NOT supported by that Hybrid video feature.
- with default mboard bios settings, the video CARD in the mboard slot produced NO VIDEO while booting.
- I found the video ports for the onboard video were STILL PRODUCING VIDEO.

In order to get the video CARD in the mboard PCI-E X16 slot to produce video while booting, I had to change either two or one default setting(s) in the mboard's bios Setup
- to DISABLE the onboard video
- to make sure the Primary video or similar was set to a PCI-E X16 slot,
, then Save bios settings

You will probably find, when the 7900 video CARD is installed in a slot, if you connect a monitor or your TV's input to a port for the onboard video, it IS still producing video, and you DO get video from it while booting BEFORE Windows loads.

(DO NOT plug in or unplug a monitor or the TV into / from a VGA or DVI port while the computer is running !)

Then you need to go into the bios and probably change one or more settings.

I downloaded the manual for your mboard and looked at it.

This is probably what you need to do....

In your mboard's bios Setup...

Advanced tab

Onboard Device Configuration

Hybrid SLI mode

Hybrid Support - MUST be set to DISABLED

Onboard GPU - MUST be set to Auto

Primary Display Adapter - MUST be set to PCI-E

Save bios settings.
....

Shut off the computer.

Move the monitor's or TV's connection to a port on the video CARD installed in a slot space on the back of the case.

Start up the computer.
You probably WILL have video while booting BEFORE Windows loads.
......

Notes
- If you use a HDMI connection, we HAVE see some instances where someone who started a subject here got NO VIDEO while booting BEFORE Windows loads, yet a VGA or DVI connection works fine. We have no idea why that is.

- you will get no video from the onboard video ports after changing those settings If you want to use the onboard video again, you will need to either
- change settings in the bios when the monitor is connected to a video CARD
- or - remove the Cmos battery, install it again,
or move the Clear Cmos jumper on the mboard to the Clear position, move it back to the "normal" position
...to set the bios settings back to defaults, and you will need to set the current Time and Date in the bios, Save bios settings.
..................................................

HDMI has the same video output as a DVI video connection, but also has the wiring for audio integrated into the connection.
A DVI or VGA connection has no support for audio built into the connection. .
- for the TV, you have to also connect (a) cable(s) for audio to the TV's sound input(s) from your computer's audio adapter output port(s)
E.g. connect between an 1/8" stereo jack on both the sound adapter and TV, or between an 1/8*' stereo jack on the sound adapter to a pair of two mono RCA jacks , red and white, on the TV
- or - you connect amplified speakers meant for computers to the proper sound adapter ports on your computer (you will probably hear nothing from un-amplifiied speakers).

(NOTE - the front line out - headphones - stereo port on a desktop case may NOT work - that requires that you have connected the wiring from that port to a header on the mbord properly, and you MAY also need to change a default setting in the bios for the type of sound - AC '97 or HD - depending on which type the case wiring supports.
To avoid that possibility, plug into (a) audio output port(s) on the BACK of the case.)

Windows allows you to have more than one sound adapter installed on the computer, but only one of them can be used at any one time.
Also, Windows can only output sound one way at a time.

If you get no sound when you're using a VGA or DVI connection when you connect your audio adapter's output port(s) to the RIGHT audio input port(s) on the TV that go along with the video input port, or when you connect the sound adapter to amplified speakers, then you probably need to change the audio output source from HDMI to something else in the settings for your sound adapter in Windows.
+
Sound settings in Vista or Windows 7....

See Response 6 in this
http://www.computing.net/answers/ha...

starting at

" Make sure you don't have volumes set too low or muted, for things you want to hear or use.... "

Note that the sound is Muted if the blue speaker icon has a red circle icon with a diagonal bar.

E.g.
On my computer that has MCE 2005 / Vista Home Premium on it, the mboard's onboard video has a HDMI port, but I am not using it at present.

In Vista, in Sound - Playback settings, I have a listing for "Digital Output Device (HDMI)" but it is NOT the default device.

The default device has the green circle with a white checmark on it - in my case that's beside Speakers.

I suspect your HDMI output is the default in your Playback settings.

When you're using a VGA or DVI connection, that must be set to something else.

To change which sound source is the default, RIGHT click on something else that is not the default, e.g. you probably need to select Speakers in your case, and select Set as Default or similar.


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#6
February 26, 2012 at 19:02:02
Thanks for getting back me - to be brutally honest with you this sounds far to complicated for me to try to tackle myself - i'm ok with setting things up, installing drivers and fixing most software issues, but when it comes to opening the PC up and disconnecting things and altering BIOS it has me in cold sweats and panicking that i'll move something important or pull out the wrong wire.
I'm quite friendly with the bloke in the local PC Specialist/Repair shop so i'll probs go and see him and get him to bring this page up and look for himself what needs to be done - i'm quite aware of my own limitations and if it is as complicated as I think it may be i'll either get him to do it or at the very least show me what to do on one of the many opened up pc's in the shop.
If it was the pc my wife and daughter use i'd probably have a go, but cos it's mine and i like it more than I like them two i'd rather let someone who knows exactly what they are doing sort it.
I mean you could also be a doctor and explain to me exactly how to do a triple heart bypass but that doesn't mean I am actually capable of doing it - so don't be upset/put out that i'm gonna get someone else to try and sort it. I really appreciate all the help and advice and i'm a little annoyed that it isn't just a matter of installing some software and getting the pc to sort it out itself - thinking about it now it makes sense that it has to do with the Nvidia cards as sometimes when I turn the pc on and it is connected via hdmi sometimes the audio doesn't come on for some reason - if I power down and restart it comes on - it doesn't do it that often, maybe 1 in 10-15 times.
Again thanks for the help and i'll let you know what happens regarding sorting out the problem(s) and you never know this little glitch may help us or someone else in the future regarding problems with there pc.

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#7
February 27, 2012 at 07:32:02
Thanks for the thanks.
If you feel you need to get someone you know to help you, that's fine.

Your problem of having no video BEFORE Windows loads cannot be caused by any software on the hard drive.
In your case it can be caused by bios settings being wrong for your situation with your ONE video CARD - your onboard video is a video adapter but it's NOT a video CARD.


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