If you haven't flashed the BIOS with Qflash before, I did that recently and have some advice:
1) Disconnect all hard drives -- this is because the naming conventions used in QFlash can be confusing
2) Download the new BIOS, expand it, and copy the files to USB stick. Be certain the stick is formatted using FAT or FAT32. Most are, but if you have a very large one formatted NTFS, that won't work
3) Stick in the USB drive, restart the PC, and if pressing <End> doesn't get you into QFlash, press <Del> to get into the BIOS and then press <F8> to get into QFlash
4) When QFlash starts, back up your existing BIOS to the USB stick. You will need to select the Hard Drive (even though you don't have one connected"
5) Then, load the new BIOS from the USB stick
6) When you boot back into the BIOS, be sure to go through each main menu and select Optimized Defaults (I think it's F7)
I normally avoid BIOS flashing lie the plague, but I had to do this recently and QFlash is a very good way to do it.
Good Luck with yours.