[SOLVED] New GPU showing black screen - What is my next step to try out?

[aloefgren]

Hi,

Specs:
Silver Power SP-SS500 500W PSU
ATX 12V V2.2, 80 Plus, Standard, 1x 6pin+1x 6+2pin
PCIe
-
AMD FX-6100 6-Core Processor
Socket- AM3+, 3.3Ghz, 95W
-
ASUS M5A78L-M LX V2, Socket-AM3+
mATX, AMD780L+SB710, DDR3, 1xPCIe(2.0)x16,
Hybrid CFX, GbLAN, VGA
-
Kingston ValueR. DDR3 1333MHz 8GB, CL9
Kit w/2x ValueRAM 4GB DDR3
-
XFX Radeon HD 7850 2GB GDDR5
PCI-Express 3.0
Geforce GTX 960 2GB, 120W , 8 pin, 2048MB GDDR5 (128 bit)


Long story short:
A very old computer I'm trying to fix. My old GPU Radeon 7850 failed after computer shutdown by itself. It showed green lines on screen. I figured it was the GPU since the internal graphics through VGA was working.

I have bought a new GPU (second hand, should be OK), a Geforce 960. I started out by noticing my PSU didn't have 6+2 pin, it had 2x4 and 1x6 pin. I bought a 6 to 8 pin converter for the new GPU.

• Computer able to start with internal graphics only, I set bios to start with internal graphics first
• Uninstalled AMD drivers, rebooted
• Installed Geforce drivers for 960
• Cleaned the computer slots and put new GPU in
• Screen going into power save mode when I connect through the HDMI (fans are spinning and the card is lightening up at boot)
• Set bios to boot GFX0-etc, still not working

Next steps I'm thinking of:

• Disable internal graphics
• Resetting BIOS

I am a bit unsure about the cards PCI-slot placement. When I put it there it's fine. It has to move jut a tiny tiny bit though for me to be able to use the "screws" in the chassi.

My first question is - will I be able to start the computer with internal graphics if I disable it and the GPU still doesn't work? I am afraid I will disable it, followed by GPU not working and I can't get a screen at all to keep trying stuff.

Any thoughts are welcome!

Thanks,
Anton

 

[hang-the-9]

"I have bought a new GPU (second hand, should be OK), a Geforce 960. I started out by noticing my PSU didn't have 6+2 pin, it had 2x4 and 1x6 pin. I bought a 6 to 8 pin converter for the new GPU. "

According to the power supply specifications it has a 6+2 pin cable, if you don't have that then buy one for your power supply if it's modular and you are missing the cable. Don't use one made for another brand and model. A 6-8 pin adapter won't do you much good since you are not going to be getting enough power from it.

Another possible issue, you bought a used card, did you see it running before you bought it?

Could also be the power supply, that model looks to be about 12 yrs old, there are reviews of it from 2008.