No display with new GPU but system boots

[JuggarJones]

So I got a replacement GPU today as my other one would have black screens randomly whilst I played games, but I'm experiencing another problem now. My first graphics card worked fine for about a year and a half, then the random black screens occured, so I had it sent off and I used on board graphics. A friend then gave me his old GPU so I could actually run games again (GT640??), which worked completely fine.

So in order to solve this I tried clearing the CMOS by taking the battery out, which didn't help, I've made sure all cables are properly plugged in and the GPU is correctly seated. I've completely removed any previous display drivers, as well as disabled on board graphics through device manager. I've changed the primary display adapter from GFX0, to PCI and then to IGFX so I could run on board with the GPU in (got sick of taking it out constantly). Everything else in the build has been working fine since I built it around 2 years ago

My specs are:
-Windows 8.1
-AMD fx-6300 Black Edition
-Crucial Ballistix Sport 8GB (2x4GB) DDR3
-Seagate Barracuda 500GB
-OCZ CoreXtreme 500w '80 Plus' Power SupplyMSI HD -7870 Black Knight 2048MB GDDR5 PCI-E
-Asus M5A78L-M/USB3

I also get a blue screen every time I try to download the drivers as part of AMD catalyst, and i was going to manually update the drivers through device manager but it doesn't display/detect my GPU. I've probably missed some information out, so feel free to ask anything and any help is appreciated!

EDIT: I've now managed to install the drivers and AMD catalyst, and the GPU appears in device manager as HD 7800 series, however I still get no signal with it

 

[shankly1985]

Do you know the BSOD error code?

 

[JuggarJones]

Do you know the BSOD error code?

All I can remember is something very similar to "system thread exception not handled atihdWB6.sys"

I will double check tomorrow morning as it's now 2am

 

[shankly1985]

All I can remember is something very similar to "system thread exception not handled atikmdag.sys"

I will double check tomorrow morning as it's now 2am

Download either WhoCrashed or BluescreenViewer it will list the driver and Bug check..

 

[rodt99]

Updated the BIOS on your mobo?

 

[JuggarJones]

Download either WhoCrashed or BluescreenViewer it will list the driver and Bug check..

BluescreenView says:
Bug check string: SYSTEM_THREAD_EXCEPTION_NOT_HANDLED
Bug check code: 0x1000007e
Caused by driver: AtihdWB6.sys
Caused by address: AtihdWB6.sys+b228

 

[JuggarJones]

Updated the BIOS on your mobo?

Yeah I've tried this

 

[JuggarJones]

Using the sfc.exe /scannow command in command prompt has resulted in corrput files being found, but it couldn't fix them

"Windows Resource Protection found corrupt files but was unable to fix some
of them. Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For
example C:\Windows\Logs\CBS\CBS.log. Note that logging is currently not
supported in offline servicing scenarios."

The log, which is probably a bit too long to post here, says "Cannot repair member file [l:36{18}]"Amd64\CNBJ2530.DPB""

 

[shankly1985]

You ran memtest86?

 

[Juniper]

I had similar issues with a 7950 and a Gigabyte motherboard which I resolved by manually setting PCI-Express to Gen 2 in BIOS.

 

[JuggarJones]

You ran memtest86?

Yeah no errors, so at least the RAM is good

 

[JuggarJones]

I had similar issues with a 7950 and a Gigabyte motherboard which I resolved by manually setting PCI-Express to Gen 2 in BIOS.

I can't remember seeing settings for changing something to Gen 2, and I'm pretty sure I searched through the whole BIOS

I'm not sure if BIOS settings change when HDMI is in the GPU, but I can't get to BIOS when the GPU is using the HDMI