Can anyone help me?

[Robster]

Earlier today, i was playing counter-strike source when suddenly the picture just freezes and i couldn't do anything... So i waited, nothing happened. Then I shut down my computer through the powerbutton. When i tried to boot up the computer again; i got power but I couldn't get any signal to my monitor and the computer wasnt loading. It was just powered up but nothing happened...

So i began inspecting what the problem could be.
I changed the memories, harddrives and finally the graphic-card to an old GeForce 2. And then it worked. Windows was successfully loaded and all that...


My question is...

Does my PSU lack of power, or is my new gfx-card broken?



These are my specs

Case Antec SLK-3700AMB
Cooling Glacialtech 120mm casefan, Acousti 120mm (12v) casefan, Zalman CNPS9500LED CPU fan
PSU SL-400P (400W) info can be found here (general) and here (detailed)
CPU Intel P4 3,4GHZ 800FSB Northwood
Memory Corsair Twinx2048-3200C2PRO (2Gig DualRam CAS2)
Video Gainward 7800GS 512MB AGP
HDD 1xWD 120GB 7200RPM 8MB IDE, 1xMaxtor Maxline III 300GB 16MB S-ATA
Cd/Dvd/Floppy 1xAsus 40X CD-Rom drive, 1xFloppy-drive
Monitor Samsung SyncMaster 940BF
Misc Extra USB & Firewire card plugged to motherboard, PS2 Keyb & Mouse.

 

[DarkSide50420]

well it could be the psu not giving off enough volts to the gfx card or it could be the gfx card my first guess would be the psu goto a local computer store and ask if you can test your gfx card in another rig or if you can test a better higher powered psu in your rig tell them whats going on and they could help you alot faster than us here online can.

 

[Robster]

But the weird part is that I did not experience any problems with my rig, for about 1½ month - until now.

 

[Oyeve]

That psu SHOULD be enough. Try old 7900 again but disconnect anything that you dont need to play that game a see what happens. Also, check all fans, mobo, cpu, gpu case fans for dust bunnies.