Hi! An hour ago i tried to turn on my PC, and it looks like it doesnt work. My monitor stays black, and i dont hear the famous "beep" i always hear at startup. I suspected it could be the vid card, so i waited long enough to enter windows xp, and i should hear the windows welcome sound, but nothing... So, im suspecting its a CPU or a Motherboard issue. May any1 help?

 I just tried other vid card and the pc worked perfectly. It seems my BRANDLY NEW 8800GT is dead!! How could this happen?

It might not be dead, it could just have burped and is not loading the bios (video card i mean), you could try to reset your mainboard bios and plop the card back in and see if it boots. Sometimes the video cards act quirky - I have an old gts that every now and again needs a cold boot to work right - then again it needs a new fan too, but remember its not custom unless your the only one who can boot it :). At any rate if its brand new regardless of what you can do to make it work, i'd just get it replaced asap.

dizowned:

its not custom unless your the only one who can boot it

Maybe it's the powersupply.  Your old card is a 7600GT right?  That should use less power than a 8800GS, so maybe your PSU can't handle it.  You got specs on the PSU?

it might be the card but it could be the vrail as well... I would say RMA the card a get a new one if that will not fix it then you know its something else.

Crisis Causer:

Maybe it's the powersupply.  Your old card is a 7600GT right?  That should use less power than a 8800GS, so maybe your PSU can't handle it.  You got specs on the PSU?

Well, when i first installed the 8800GT i wasnt sure if my PSU could handle my new system. But well, that was more than a month ago, and the PC worked until now with that PSU. Lately my rig has been shutting down randomly.(That was before this new problem, now since i plugged my 7600GT the PC is working fine until now, its been 1 day only though. ) The weird thing is that almost always it happened when the PC was at idle. I could play Crysis for hours on high with no prob, and maybe tomorrow i leave my PC at idle for half an hour or so, and it shuts down! I think if its a PSU prob, it has nothing to do with wattage at least(i dont know a lot about PSU, so if any1 can enlighten me, i would appreciate that).

it wouldn't make sense if it was shutting down on idle and not under load if it was a PSU problem. All the ram checked out fine, it might be the HD. just as a thought.