Good morning.
I've had my 6950 flashed to 6970 since launch and everything ran fine.
When Borderlands 2 came out I wanted to see what the physX was like so I swapped the card for a GTX480. The 480 is a beast but it's a bit too hot and noisy for general office/video use so I went to swap my 6950 back in.
This is where the problems started.
I run a 120hz monitor so the standard 2d clocks on the 6950 (250/150) are a bit low and cause flickering. Before the 480 it realised this and set 2d clocks at a much higher 500/1400 to compensate. Since reinstalling the card it won't set 2d clocks to this higher limit unless I manually change refresh rate down to 60hz then back to 120hz. I don't want to do this every time I turn the PC on so I thought I'd edit the BIOS to up the 2d clocks all the time.
I've used gpuz to extract my current BIOS, edited the 2d clocks in radeon bios editor (RBE) to a more generous 250/600 and flashed with ATI winflash.
On reboot I always get a system_service_exception BSOD.
At first I thought it was dodgy windows flashing so I then used a bootable USB to flash it using atiflash - I still get the same BSOD.
I can flash back to my original core unlocked BIOS using winflash and atiflash so I know there's nothing wrong with how I'm flashing the card but no matter what I do ANY changes I make in RBE cause this same BSOD.
All software is the latest version available and even changes of 1mhz cause the same crash on startup. BIOS/windows splash screen/system repair all display normally.
Any ideas on what I'm doing wrong or how to fix it? I really can't be doing with manually changing the refresh rate every time I start Windows.
I've had my 6950 flashed to 6970 since launch and everything ran fine.
When Borderlands 2 came out I wanted to see what the physX was like so I swapped the card for a GTX480. The 480 is a beast but it's a bit too hot and noisy for general office/video use so I went to swap my 6950 back in.
This is where the problems started.
I run a 120hz monitor so the standard 2d clocks on the 6950 (250/150) are a bit low and cause flickering. Before the 480 it realised this and set 2d clocks at a much higher 500/1400 to compensate. Since reinstalling the card it won't set 2d clocks to this higher limit unless I manually change refresh rate down to 60hz then back to 120hz. I don't want to do this every time I turn the PC on so I thought I'd edit the BIOS to up the 2d clocks all the time.
I've used gpuz to extract my current BIOS, edited the 2d clocks in radeon bios editor (RBE) to a more generous 250/600 and flashed with ATI winflash.
On reboot I always get a system_service_exception BSOD.
At first I thought it was dodgy windows flashing so I then used a bootable USB to flash it using atiflash - I still get the same BSOD.
I can flash back to my original core unlocked BIOS using winflash and atiflash so I know there's nothing wrong with how I'm flashing the card but no matter what I do ANY changes I make in RBE cause this same BSOD.
All software is the latest version available and even changes of 1mhz cause the same crash on startup. BIOS/windows splash screen/system repair all display normally.
Any ideas on what I'm doing wrong or how to fix it? I really can't be doing with manually changing the refresh rate every time I start Windows.