Black screen no signal from graphics card.

[Exeth]

Hi guys i have a system which is a few years old now except for the mb and ram and about 5 months back i decided to upgrade to windows 7 and ever since i have had this problem in various states and i haven't been able to find a single solution.

My System:
Win 7 Ultimate 64bit
Q6600 stock speed
Foxxconn Black Ops mobo
OCZ Platinum 4GB (2x2GB) DDR3 PC3-10666C7 1333MHz Dual Channel
2x Radeon HD 2900XT
1000w thermaltake toughpower
1x 130gb WDraptor and 2x older sata drives for storage

The system worked fine until i installed win7.
The problem seems to creep us mostly while playing games an especially just after a loading screen has finished however it can sometimes happen on the desktop for example i have been playing Sarcraft 2 all week and it has worked really well i was on it for a good 5 hours solid yesterday then i start it up this morning and the first match i get the black screen however audio carries on as i can still talk to my friend on skype. (when it has happened in counter strike audio has crashed)

I have tried reinstalling too various HDDs I have tried running it from 1 card, changing the ram, updating drivers, driver rollback, changing the dvi lead, unplugging all unessential hardware except for the minimum but nothing so far has worked.

The problem is also extremely intermittent, i have been running a fresh install of win7 for about 2 weeks now and today is the first time the problem has come back on previous installs it has sometimes happened all the time. The only thing that has changed was that after one driver update i would get BSOD for various ati drivers however after a restore and a driver wipe then reinstall this problem went away.

Any help would be appreciated thanks

Chris

 

[Exeth]

no just the one. Sorry i havent replied in a while but i have been buisy with uni results.

A few days ago i got a sound card error so i uninstalled it and put a new one in that i had spare and suddenly no problem for 3 days until again the problem just came back.

 

[Exeth]

Ok i think i have solved the problem.
I did a fresh re-install of Vista 32 and all the drivers seem to function properly i also stripped down my graphics cards and put a thin layer of Arctic silver on every chip connected to a heat transmitting surface.

Ultimately i believe the problem was located in the drivers for win 7 and some crazy annoying incompatibility. I will be trying out 64bit version of vista soon to see if that is also stable.

Thanks for all you help and i hope this thread can help anybody else suffering from a similar problem with win7.