Do you have the latest BIOS installed?
I would suggest not, is so please use a fat formatted USB stick to flash your bios via the EZflash2 utility that is found in the tools section. Do not use OS based applications to flash bios yeah. The bios flash might take a while if you have not flashed for a while as some of the new bios include a firmware update.
To help us help you - please provide as much information about your system and the problem as possible.