7950GT installation

[Mangonel410]

I just got a 7950GT as a RMA for a defunct 7900GT and I can't get the 7950GT to work.

When I first installed the 7950 I had the 93.71 driver installed and it appeared to run fine but after about 20minutes or so the screen displayed red rectangular boxes all over the screen so I uninstalled all drivers ran Driver Cleaner afterwards when I try to boot up my comp the 7950 may or may not display on the screen, when it does display its only a short time before rectangular boxes (usually red) show up and it gets to the point where nothing can be seen. After trying several times I did managed to reinstall the driver version that comes on the CD with the card ( it says 97.28B) and rebooted. It worked for about 2 minutes then the red boxes came back.

From what I can see when it does boot it seems like the card may or may not be sending anything to the monitor because 2 out of every 3 manual restarts will yield nothing but a blank monitor.

My systemspecs follow, I really hope you guys can help me out. Thanks in advance for any advice.

Operating System: Windows XP Professional (5.1, Build 2600) Service Pack 2 (2600.xpsp_sp2_gdr.070227-2254)
Language: English (Regional Setting: English)
System Manufacturer: MICRO-STAR INTERNATIONAL CO., LTD
System Model: MS-7125
BIOS: Phoenix - AwardBIOS v6.00PG
Processor: AMD Athlon(tm) 64 Processor 3800+, MMX, 3DNow, ~2.4GHz
Memory: 2816MB RAM
Page File: 936MB used, 5942MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 9.0c (4.09.0000.0904)
Motherboard K8N Neo4 Platinum

[sushrukh]

What power supply are you using ? Have you connected the PCI-E 6 pin connector to your card ? Also check the temp of your card from the Nvidia control panel & see if the fan is working properly.

[P_Panit]

I cannot see anything about PSU here. Since 7800GS, PSU is very important.
(6800Ultra require just 485W noting to do with current)

[Mangonel410]

New member won't let me post the link so heres the specs from the page
550W
+3.3V @ 32A,
+5V @ 40A,
+5VSB @ 2A,
+12V @ 19A,
+12V (2nd) @ 19A

[Pat123]

yh if its a no name PSU thats most likely your problem.. Maybe its a faulty card but my bets on the PSU.

[xfxsupport]

It very well could be a PSU problem. To help determine the issue are you able to try this video card in another system? Also try connecting a different power cord to the back of the video card from the PSU after you disconnect everything else from the PSU except the motherboard, video card and main hard drive.


XFX Support

[Mangonel410]

I unplugged everything including all fans, even went so far as to install the passive heatsink that came with it. I also tried varying between using an adapter that uses two 4pins to make a 6pin and the PCIe 6pin from the psu. Sadly though it still doesn't want to start up.

[Mangonel410]

Well guys, does this mean that I need a larger PSU? If thats the verdict I'll have to get another one but I'd like to know if you guys have any recommendations on good PSUs that are <200$ around the 750W range with at least 50A on the combined 12V. Also the main connector has to be either 20 or 20+4.

[westy87]

Silverstone make nice PSU's
http://www.silverstonetek.com/products/power.php?area=usa