video card not detected

Xfx Geforce 8600gt video card xxx editio...
October 15, 2009 at 03:45:35
Specs: Windows XP, core 2 duo 2.66 GHz, intel desktop board DG33BU, 2GB 800Mhz ddr2 ram
I have a problem with my NVidia 8600 GT video card, the video card is not detected by my pc, when booted a blank screen appears ( not even the bios splash screen is displayed)

After working fine for 2 years with no problems, my card NVidia 8600 GT suddenly failed to get detected from past 2 days.

This happened After using windows hibernate feature for first time, i tried to boot my pc the next day and my pc booted with a blank screen.

Things that i have tried so far :-

I have tested my NVidia 8600 GT and Monitor on another pc and it works absolutely fine.

I even upgraded the PSU and it did not help.

(tried this just recently) - borrowed a 9800GT 512 MB video card, installed on my pc every thing worked fine (went blank after windows load screen, after installing the drivers in safe mode every thing worked fine).

updated the bios to the latest version.

BTW - The pc boots normally when the monitor is connected to the onBoard VGA graphics device.

I thought my mobo is faulty at first, but i dont know what to do, any help?


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#1
October 15, 2009 at 09:29:25
Hibernate & Standby are features designed for laptops/notebooks, not desktops. They are known to cause problems on desktop machines. You apparently never needed it before, why did you feel you needed to try it now? If you're concerned about power consumption, all you needed to do was tweak your power option/power scheme settings.

"Things that i have tried so far :-"

It's nice to see someone troubleshooting for a change, but you're taking it WAY too far. Why would you install new drivers for the 9800GT if you're just testing?

Your board has onboard graphics, right? Temporarily remove the video card & connect the monitor to the onboard. Boot into safe mode & uninstall the nVidia drivers. And disable hibernate! Then shutdown & reinstall the 8600GT.


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#2
October 15, 2009 at 10:23:21
"I have tested my NVidia 8600 GT and Monitor on another pc and it works absolutely fine."

So there's nothing wrong with the original card.

"...borrowed a 9800GT 512 MB video card, installed on my pc every thing worked fine ..."

So there's nothing wrong with your mboard or the PCI-E X16 slot circuits.

"I even upgraded the PSU and it did not help."

That was probably not necessary.
.....

"The pc boots normally when the monitor is connected to the onBoard VGA graphics device."

Is that with the original graphics card or the 9800GT card removed, or with it still installed?

Most bioses automatically disable the onboard video when you install a video card in the PCI-E slot, but I have learned through experience that doesn't always apply to recent mboards with certain main chipsets - your mboard is recent and has a recent main chipset.

If the onboard video works when a PCI-E X16 card is installed, if you get no video at all from the PCI-EX 16 card, you need to change a setting in the bios Setup.

Apparently, for your mboard, most of the detailed info about your bios Setup settings is NOT in the manuals for the mboard, but that info is here:
Boot settings glossary
http://download.intel.com/support/m...

- you press F2 repeatedly while booting early in the boot to get into the bios Setup.
E.g. right after the mboard beeps once.

Advanced > Video Configuration

Boot Display Device - DVI + VGA, or VGA + LVDS
Designates the Primary graphics device.
- default not stated
That's oddball labelling - I have no idea what the difference is.

Whatever it is set to, set it to the other choice.

Also there is....

DVMT Mode - DVMT, Fixed, Both
- default not stated

It's probably best left set to whatever it is already set to, if it's set to a default setting.
If you're not sure whether that's set to the default, load bios defaults (see below).

For more info about DVMT mode
http://www.intel.com/chipsets/appno...
........

"updated the bios to the latest version."

That doesn't make any sense at all if the original card worked fine previously with whatever bios version the mboard had. It is extremely rare for bioses to get corrupted spontaneously. Flashing the bios is NOT a cure-all!

Flashing the bios often DOES NOT automatically load the bios defaults that go along with the bios version. If you flashed to a different bios version, if the bios defaults for that version were NOT loaded, then the changed bios version and any settings you make in Setup may NOT work correctly.

To MAKE SURE the bios defaults have been loaded, go into the bios Setup and load defaults.

In your case - select

Exit - Save Optimal Defaults
- Exit Saving Changes, or press F10, answer yes.

If the onboard video works when a PCI-E X16 card is installed, if you get no video at all from the PCI-EX 16 card, see the info above.
......

Standby and Hibernate will often NOT work correctly until AFTER the main chipset drivers have been loaded.
If you're not sure whether they have been loaded, go here and download them, and load them:
http://downloadcenter.intel.com/Det...



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#3
October 15, 2009 at 12:14:22
Thanks for the reply guys

jam:
"Hibernate & Standby are features designed for laptops/notebooks, not desktops. They are known to cause problems on desktop machines. You apparently never needed it before, why did you feel you needed to try it now? If you're concerned about power consumption, all you needed to do was tweak your power option/power scheme settings."

I had started some work recently and i always had around 10-15 windows opened at a time, so whenever i turned off the pc and turned on the next day i had to open all those windows opened before manually , so i thought of using hibernate instead.

jam
Your board has onboard graphics, right? Temporarily remove the video card & connect the monitor to the onboard. Boot into safe mode & uninstall the nVidia drivers. And disable hibernate! Then shutdown & reinstall the 8600GT.

i don't think its windows related problem because i had already formatted my hard disk and reinstalled the OS twice

"Control Panel" -> "Power Management" -> "Hibernate" tab is not accessible through safe mode, disabled the hibernate after booting normally, but i did uninstall the nvidia drivers in safe mode and followed the rest of the step, but that did not help

Tubesandwires
Is that with the original graphics card or the 9800GT card removed, or with it still installed?

checked with original graphics card installed and removed, but while monitor connected to on board video in both cases.

with 9600GT installed i have only checked with monitor connected to video card but not when connected to on board video( on board video probably be disabled by bios after detecting 9800GT)

Tubesandwires
Advanced > Video Configuration

Boot Display Device - DVI + VGA, or VGA + LVDS
the option displayed is not that complicated at all, the options listed in my pc bios under
Advanced > Video Configuration are
1) AUTO (This is the default option)
2) Int Graphics - IGD
3) Ext PCIE Graphics - PEG
4) Ext PCI Graphics - PCI

and i have changed through 1st three options many times before, but did not help.

There is one more unchangeable field in this screen called
"PEG Negotiated Width"

Before video card problem began, when everything was working fine.
When i had my original graphics card installed this field was set to "16" ( when everything was working fine)

Now
When i install my original graphics card it is set to "0".
When i uninstall my original graphics card and PCI-E slot left empty it is set to "Not Detected"
When i install 9800GT it is set to "16"

and the DVMT filed has 3 options
1)Maximum DVMT
2)DVMT (This is default option)
3)FIXED

Tubesandwires
Standby and Hibernate will often NOT work correctly until AFTER the main chipset drivers have been loaded.

I saw this message update just now, i downloaded the INF Update Utility and installed it, but nothing happened, did not help.


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#4
October 17, 2009 at 11:09:38
can anyone at least tell me which is faulty, m/b or video card so that i can replace it, i don't want to unnecessarily replace working components

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