A very well build card but i cannot mod the BIOS.

I simply copied timing of strap 0:1500 to 1625/1750/2000.

After reboot, in windows 10 device manager, I got this error:  
"Windows has stopped this device because it has reported problems. (Code 43). "

http://i.imgur.com/jgiw5Zr.jpg
http://i.imgur.com/U2ekdtO.jpg


Driver: win10-64bit-crimson-relive-beta-blockchain-workloads-aug11
It is patched by atikmdag-patcher-1.4.5
win 10 pro 64 bit

I can recover the card by flash the original backup BIOS.
I tried a couple of times, but the result is same.

HELP NEEDED.