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Computer won't boot; "No signal" displayed on monitor


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#1 LiLdEmOnDoG

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Posted 19 July 2009 - 04:14 AM

I was using my computer one day and the screen kept on turning on and off every minute or two then ONLY the text on my screen would get blurry. I restarted my PC and it would be fine for a few mins then repeat that over and over.
I booted up in safe mode and this problem didn't occur at all so I thought there was some kinda software conflicting with my system or so even tho I didn't install anything recently.
I opened up the MSConfig and disabled all the startup programs and services(Besides Microsoft's Services) then I went to startup my PC and it would not boot up.
I THINK the problem is with my motherboard but I'm not sure.
The power light is on, all the fans are spinning but I do not hear the post beep and my monitor just says no signal indicating the computer isn't on when it is.
I have taken the whole thing apart and put it back together, even tried reseating the RAM. I originally built it myself about 2 years ago and never had a problem like this occur before.
I tried letting it sit with everything unplugged for a day but that didn't work. Tonight I took out the CMOS battery and going to put it back in tomorrow to see if it will reset but I don't think that will happen.
Any help would be greatly appreciated.

My motherboard is a ASUS P5NSLI
http://www.newegg.com/Product/Product.aspx...N82E16813131032

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#2 fairjoeblue

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Posted 19 July 2009 - 11:51 AM

Looking at the motherboard from the link supplied the first thing that caught my eye is the motherboard doesn't have a very good rating.

I also see it has 2 PCI-E video card slots but no onboard video.
This leads to the conclusion you have a video card.
I would try a different video card in the unit or try your video card in a different computer to see if it works right.
Before I pronounced the motherboard bad I would suspect video card failure as the problem
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#3 LiLdEmOnDoG

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Posted 19 July 2009 - 02:27 PM

I was thinking that at first to but I would still hear the bios post beep if the video card was failing wouldn't I? Sadly I don't have another computer that can use a PCI-E card to test it with but using the other slot didn't even cross my mind, I'm going to try that here in a few mins but I don't think thats the problem. Any other ideas?

#4 fairjoeblue

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Posted 19 July 2009 - 02:53 PM

If you don't have access to another unit with a PCI-E slot to try the video card or another video card to try in the slot, I suggest taking the video card to Ye Local Computer Shop & seeing if they test it for a reasonable fee.

Without finding out if the card is bad you can't actually proceed with troubleshooting other then just throwing new parts at it until it works.
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#5 LiLdEmOnDoG

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Posted 19 July 2009 - 03:59 PM

Gahhh yeah I kinda figured that :thumbsup:




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