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Monitor not getting signal 9 times out of 10

Last response: in Graphics & Displays
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May 7, 2009 3:33:03 AM

Hi all,

Around 9 times out of 10 when I boot up my computer the monitor doesn't show anything, but the computer itself boots (I hear the Windows chime, etc).

But when it does boot up, it works completely fine - even for a whole day.

Then when I shut it down and restart it will just not work. Is the PSU is not powerful enough?

Computer specs:

AMD Athlon 64 6000+ AM2 Processor Retail Dual Core AM2
Gigabyte GA-MA78GM-S2H AMD780G 5200HT DDR2 VGA PCIE2.0 RAID GbLAN 1394a
DDR2 2048MB(2G Single stick)PC6400 800Mhz (I have two these, totalling 4 gig)
Samsung 250G 7200RPM SATAII
NVIDIA Geforce 8800GT 512 meg
Liteon 20x DVD Dual Layer DVD+/-Rburner Black Retail (DH-20A4P)
CoolerMaster Centurion RC330 Elite Black with 420W + HD Audio(RC330KKRA)

Some extra details:

- I have tried plugging/replugging all cables in, so it's not the cables or anything obvious like that.

- I use an NVIDIA Geforce 8800GT 512 meg card

- The onboard video works every time, if I switch from the Geforce card to the onboard video

- I have had one or two 3D game crashes the last month (in GTA IV), but not enough to warrant suspicion I don't think.

- The computer was frequently beeping at me, with a few freezes here and there, until I cleaned out all the dust last week.

More about : monitor signal times

a b U Graphics card
a b C Monitor
May 7, 2009 2:53:05 PM

Welcome to the forums!

Check the operating temperature of your video card with GPU-Z.
There are some firmware updates to deal with temperature problems.
Your power supply has enough power.

May 7, 2009 10:58:32 PM

evongugg said:
Welcome to the forums!

Check the operating temperature of your video card with GPU-Z.
There are some firmware updates to deal with temperature problems.
Your power supply has enough power.


Hi there,

thanks heaps for your reply. I have downloaded GPU-Z and ran it for a while. Here is a screenshot of my results. What do you make of it? I am also downloading the latest firmware. Thanks again for your help :) 

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May 8, 2009 4:19:52 AM

That card is running quite cool, is it loaded or just idling in desktop??

Have you checked if the card is seated properly in the PCI-e slot??
May 8, 2009 4:24:24 AM

Exactly. Based on the symptoms of your problem - I would check and recheck your graphic card is seated properly in it's slot. Sometimes it will take a few attempts to get it right depending on your case and how bent or straight or well designed it all is.
May 8, 2009 5:39:04 AM

Okay, since it's now not working at all (!!?!?), I will take it out and reseat it.

Thanks again for your help. Here goes nothing. Will report back
May 8, 2009 6:02:22 AM

Okay...reseated once. Nothing happened. Reseated twice.. nothing. Third time... A CHARM!

Thank you very much for your wisdom. I shall see how it travels over the next few reboots.
May 8, 2009 12:15:13 PM

Well, if the issue comes back to haunt you, we'll be here.
May 8, 2009 8:47:50 PM

Well all is looking good after three reboots!

I don't want to push things too far unnecessarily just yet (eg rebooting just to test the card).

Thanks again for your excellent help and advice. It's worked so far!
!