New
#31
Yes, the BIOS settings. It would be good to know that the BIOS settings on your computer are exactly the same as the BIOS settings on your bro's computer.
If the settings are the same on both computers then I think we have pretty clearly determined that the problem resides inside your hard drive. That means that the OS has been corrupted, or one or more of the drivers has been corrupted, is incorrect, or is conflicting with another driver.