I have a machine that when it first boots up it has four beeps. It then displays a screen for Windows Boot Manager. Therefore, I think there is something wrong with the MBR. Displayed on the screen is "Windows 7" and "Press F8 For Advanced Options". I press F8 and choose to Repair Windows. After this I select that I want to go to Command Prompt. At the command prompt I enter: bootrec.exe /RebuildBcd after trying bootrec.exe/FixMbr and bootrec.exe/FixBoot. FixBoot and FixMbr come back and say the command completed successfully. RebuildBcd says that there are no Windows installations detected. Additionally, bootrec.exe/ScanOs also says that no Windows installations were detected. Any ideas on what the problem could be?