I was playing around with the Radeon Bios Editor in windows. (I mine on linux, but my cards had a hard limit of 900mhz memory clock so I used RBE in windows to lower that value.)
I lowered the minimum memory clock to 150Mhz on all of the cards, noticed an increased hashrate without any noticeable lag on the desktop, got greedy, booted into windows again and lowered the minimum memory clock to 75Mhz.
After that... I can start booting any operating system... but JUST before it begins to load the desktop (on windows and linux) the screen freezes and I am unable to even reboot the computer by pressing and holding the power button for 5+ seconds. I have to manually switch off the power supply.
I have tried to use an un-modified card as card number one, and 3 over/underclocked cards as the second, third and fourth cards but I receive the same result.
I do have a backup of all the GPU BIOSes (thank goodness!).
Any way to flash the GPU BIOSes to my backups without booting into an OS?
Any help would be appreciated.
Is this all I need?? http://www.techpowerup.com/forums/showthread.php?t=57750
Edit: It seems backing up the bios wasn't necessary, gigabyte keeps a record of them on their website! http://www.gigabyte.com/products/product-page.aspx?pid=3355&dl=1#bios
Topic: I just ruined 4 5870s...!!! - page 2. (Read 3811 times)
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