[nona]

My system specs:

Motherboard: Intel DH55TC

Processor: Intel core i3 540

Power Supply: Corsair CMPSU-600CXV2UK 600 Watts PSU

GPU: AMD Radeon HIS 6870 IceqX 1 GB



I saved bios of 6870 with the help of GPU-Z and copied it to my desktop. Then I edited voltage with the help of RBE .I kept original bios unmodified. I made a bootable USB and flashed my 6870 with this edited bios and it worked fine. I played lots of game with this for one week. But after one week I flashed my GPU with a bios downloaded from TPU. This new downloaded bios is of same model HIS Radeon HD 6870. ATIFlash warned me not to flash as checksum of both bioses were different but I flashed it forcefully. Now I have black screen. Then I removed this GPU and put DVI cable in onboard video port and in motherboard's bios I set it to boot from onboard video port. Then I inserted bootable USB with original bios on it and restarted PC and choose to boot from USB buttttttt now it does not boot from USB, monitor says no signal. How would I restore original bios to GPU???

people say on forums that if you have bad bios flash then reflash it with the original one using on board video. I do not have another PCIe slot but I have a PCI slot and a Nvidia 9400 GT.

Please help friends please