I've used different operating systems on linux for mining and I've had no problems with video cards where the bios has been modified. I usually keep the original bios to reflash the video card before selling or gifting it.
If you have a programmer and know how to use it, you won't ruin your video card by flashing the bios. In my country it costs $20 to flash the bios. If you decide to flash it, check the cost of this service in your country.