PC won't recognize my monitor.

August 23, 2014 at 13:18:20
Specs: Linux unbunto, 6g ram
I've tried downloading a new operating system on my HP desktop. I selected it to boot from default drive and restarted the PC. Now it starts and runs, no beeping or anything but nothing shows up on my monitor. I've tried connecting my PC to my TV using a HDMI cable seeing if it was just the monitor I was using and nothing showed up. I was changing from unbunto Linux operating system to windows 7.

See More: PC wont recognize my monitor.

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#1
August 23, 2014 at 13:26:28
We need some specs on the hardware. For instance, do you have an add in graphics card?

You may be connecting to the wrong video port. Did you move the video cable since running Linux successfully?

Do you have more than one hard drive?


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#2
August 23, 2014 at 16:31:21
If you never ever see anything on the monitor your issue is almost certainly hardware.

EDIT:
Or a BIOS issue.

I see from a later post that you do see the logo so that makes all the difference.

Always pop back and let us know the outcome - thanks

message edited by Derek


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#3
August 23, 2014 at 22:39:46
Thanks for the fast response I appreciate it. The PC is an HPE-500z it has a athlon 3.0ghz processor, 1gig radeon HD 6450 graphics card, 6gig ddr3, 1tb hard drive. I did not move the video cable until it messed up. I've tried unplugging it and plugging it back in. Nope I only have 1 hard drive

message edited by touchdbyauncle


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Related Solutions

#4
August 24, 2014 at 07:38:49
Strange. Do you have more than one monitor port on that box?

Have you tried the monitor in another PC or a different monitor on this one? I doubt the monitor has suddenly decided to fail but it would be best eliminate it from the equation.

Always pop back and let us know the outcome - thanks


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#5
August 24, 2014 at 12:01:25
Only one monitor port but I do have to use a extra connector in order to use this monitor due to the monitors connector being to small for the port. This is the only PC I have right now along with the only monitor. I'm using a tablet to post on here. The monitor turns on , lights up and all that. I did try to use an HDMI cable to connect it to my HDTV to see if maybe the monitor was not working, but still nothing.

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#6
August 24, 2014 at 14:03:36
Nothing shows on the monitor--not even the posting or logo screen? Or does that show but when windows starts to load you see nothing?

Nothing at all probably means some other hardware problem. If it's just windows that's not showing, have you tried safe mode?

Edit That's a really, uhh, . . disturbing username you've chosen.

Don't forget to preorder your Hatch green chili for this fall. Many vendors ship world-wide.

message edited by DAVEINCAPS


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#7
August 24, 2014 at 14:26:34
Any chance you have set something badly wrong in BIOS - that's virtually hardware from a practical standpoint. A bad BIOS update, for example, might just about do it.

Always pop back and let us know the outcome - thanks

message edited by Derek


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#8
August 24, 2014 at 20:59:53
The only thing that shows up is the Asus logo from the monitor, then nothing. I don't think I did anything crazy with the bios. All I did was select the boot drive to default and then it stopped showing up on the monitor. I didn't do any bios updates or anything along those lines. I did a flash drive boot with windows 7 downloaded on it, but I didn't have my drivers downloaded so I just restarted and selected boot from default just trying to get back to my Linux os and it wouldn't show on the monitor. If I did mess up bios what could I do to fix it?


Haha yeah its the name me and my buddies use for trivia night at the bar.


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#9
August 24, 2014 at 22:01:16
Oh, OK. Yeah I wondered about that.

If you didn't do a bios update or make other changes there then it's probably not a bios issue, although there's usually an option there to revert to 'bios defaults'. You could try that and see if it makes any difference.

Does linux have a boot menu of safe mode-type boot option? Or if the windows 7 install went OK try safe mode from the windows F8 boot menu.

Most PCs will give a single beep on the completion of a successful post just before the OS start to load. Assuming your HP is the same then not having that beep would be bad. Were you inside the case at all? If so, retrace your steps checking that all cables and cards are firmly attached.

If it was a hard drive problem I'd expect an error to show up but you might temporarily disconnect the hard drive and see if you get the normal messages for that situation.

Oh, and when you're in the case make sure the power cord is removed--not because you might get shocked but because most power supplies provide a small charge even when the computer is off and removing or installing hardware to a 'live' board can cause hardware failure.

Don't forget to preorder your Hatch green chili for this fall. Many vendors ship world-wide.


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#10
August 25, 2014 at 08:31:18
While you have the computer powered off, disconnect it from the domestic supply then hold the Power Off/On button in for about 20 seconds. Sometimes the charge on the motherboard keeps previous settings - I had this happen with a Linux distro. It might not help but if it can "unstick" it there might be a chance of moving forward again.

Always pop back and let us know the outcome - thanks


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#11
August 25, 2014 at 19:48:19
Daveincaps, nothing shows up on my monitor so I can't select safe mode or anything like that. I did open the case up, I'll have to check all the cables but only thing I really unplugged was the disk drive, but was reconnected. The HP has never beeped or anything when loading even when it was outta the box.

Derek I've tried the holding the power button down for 30 seconds, it was one of the first things I tried when I started doing research on how to fix this.


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#12
August 25, 2014 at 20:23:51
Oh, the Asus logo is generated by the monitor and not coming from the PC. Have you ever gotten any 'no signal' or similar messages from the monitor?

You can temporarily remove any add-on cards and disconnect all the drives and see if you get the HP logo or posting screen. If so one of the disconnected items must be at fault. Specifically if it's a video fault you could try adding a video card to see if the HP's video adapter has failed. And I guess you're sure the monitor and connections are good?

Don't forget to preorder your Hatch green chili for this fall. Many vendors ship world-wide.

message edited by DAVEINCAPS


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#13
August 26, 2014 at 09:16:08
"All I did was select the boot drive to default and then it stopped showing up on the monitor."

If that is the case where did you select the Default settings for the hared drive? That would normally be in the BIOS (setup) screens.


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#14
August 26, 2014 at 13:35:13
Daveincaps I have gotten a no signal message on the monitor. I'll try disconnecting the video card and see if that works. If not I'll keep disconnecting till I find which hardware is the problem. Would the video card be the first thing you'd check? Cause the computer starts and runs just like normal just no picture. I'm pretty sure the monitor is in working order it turns on and off, but I don't have another PC so I can't be 100% sure.

Othehill, yeah I selected boot default in the bios. Then when I rebooted nothing showed up on my monitor but the computer is on and running.

message edited by touchdbyauncle


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#15
August 26, 2014 at 13:56:12
Have you only just had that "no signal" message on the monitor then? I'd previously thought you saw nothing it all. Usually when you see "no signal" the monitor itself is working.

When you say the computer starts and runs like normal do you mean it sounds as if it is booting up normally? If so video card is high on the list of culprits. Best remove the video card and clean its edge connectors with a soft pencil eraser then pop it in and out a few times to make sure there is no oxide (tarnish) on the socket. It would be an idea to do the same for RAM.

If you have done anything inside it is easy to disturb a loose connection or even move something slightly so that its edge connector moves to a position which has tarnished.

Always pop back and let us know the outcome - thanks

message edited by Derek


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#16
August 26, 2014 at 16:01:26
IF you actually have an add in graphics card are you sure you are connecting the monitor to that card, and not the integrated graphics on the motherboard?

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#17
August 27, 2014 at 01:24:34
If 'starts and runs just like normal' means you start it up and shortly hear the windows startup sounds then yeah, a monitor, monitor connection or video adapter problem.

If it means you hear the fans and drive spin up and and see the LEDs flash but that's all then it could be just about anything.

In # 5 you mentioned something about an extra connector being needs to get the monitor attached. Did it previously work OK that way or is it something new?

If you feel it may be a bios setting you can open the case and locate the 'clear cmos' jumper. With the power cord disconnected jumper it to the clear position for a few seconds and then back to standby. That will reset everything back to default and might undo what you did--if it is a bios problem. Then start it up and see what happens.

Did you try temporarily disconnecting the drives and removing any add-on cards to see if you get the logo or posting screen?

The description of what you did shouldn't have caused this problem. Is there anything else that happened to it--maybe you zapped it with static?

Don't forget to preorder your Hatch green chili for this fall. Many vendors ship world-wide.


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#18
August 27, 2014 at 21:07:58
Derek, ya I just noticed the no signal message. The computer starts and drives spinning and it sounds like its running normal. I'll have the monitor on and even when I start the PC the monitor will stay in its like hibernation mode, when I turn it off and back on it'll say no signal and go right back into hibernation. I'll check for loose connectors and clean the ram and video card.

Dave, ya it starts all the LEDs turn on drive spins and nothing on the monitor. The extra connector worked perfectly before all this. Its just a connecter that allows me to plug the monitor into a larger port cause the monitors connecter isn't big enough for this PC. Im going to try taking out the video card and stuff see if its some kinda hardware problem, if that doesn't work I'll look into the CMOS jumper.

I'll let you guys know Saturday if I fixed it. Fingers crossed I miss my PC!


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