Sign in with
Sign up | Sign in
Your question

Sapphire HD 7850 1 GB not detected by the system

Last response: in Graphics & Displays
Share
April 1, 2013 10:12:48 PM

Hi all,

I recently bought a Sapphire HD 7850 1GB graphics card but I can not get it to work. It looks like it's not recognized by the system. I can boot my PC fine with the screen connected to the GPU of the motherboard, but when I then look at devicemanger or MSINFO32 it looks like the system has not recognised anything but the GPU of the motherboard. There is no unknown device or HD 7850.

The 6-pin power cable (of a coolermaster 600 watt PSU) is connected and the fans are spinning. It is not the slot in itself because when I put my old graphics card (HD 5700) back in, it works fine.

I have also upgraded the bios to the newest version (0505) but to no avail. In the bios settings "PCI-E" is set as the primary graphics boot device.

My motherboard is a PN5-EM HDMI which has (I believe) a PCI express x 16 version 1.1 slot. There is a lot of conflicting information on this but I understand that for most cards (especially NVIDIA) they are all backwards compatible. But for the power-saving AMD cards for example I might experience compatibility issues.

What should I do?

Thanks!
a c 182 U Graphics card
a b V Motherboard
April 1, 2013 10:20:11 PM

try that gpu in others pc.

pce exp 1.1 have no issues
m
0
l
a c 182 U Graphics card
a b V Motherboard
April 1, 2013 10:23:13 PM

dude you have pci 1.0a not 1.1

1.1 is fully compaitable with any pci 3.0gpu

1.0 has issues with amd gpus while nvidia doesnot
m
0
l
Related resources
April 1, 2013 10:31:10 PM

I don't really have another PC to test it in unfortunately but I will see what I can do.

Can anyone confirm whether I have 1.1 or 1.0 on my motherboard? How can I check this?
m
0
l
a c 182 U Graphics card
a b V Motherboard
April 1, 2013 10:32:08 PM

download gpu z and see
m
0
l
a c 182 U Graphics card
a b V Motherboard
April 1, 2013 10:46:13 PM

well you have check that gpu in friends pc as to confirm that gpu is working!

well it should work with your pc.
m
0
l
April 6, 2013 9:39:19 PM

I want back to the shop they tested it there and it worked fine.
So I bought a new motherboard and now it works fine for me as well.

Looks there was some incompatibility after all....
m
0
l
a c 182 U Graphics card
a b V Motherboard
April 6, 2013 9:48:03 PM

hmm yes these pci exp issues have no complete final answer to it,sometimes works,sometimes doesnot.
m
0
l
!