I had ubuntu on my pc and wanted to switch to windows 8.1 pro. I was installing windows with a flash drive that I booted to from the bios when it asked to restart. After it restarted I came back to the screen where you press del to enter bios but it was froze there. If I remove the 500 gb wd blue hard drive I can load into the bios fine. I took the drive and reformatted it on another computer and came back to the same problem. I also have tried removing the cmos battery from the motherboard and the putting it back. Not sure where to go from here, any help would be very appreciated.