You cannot boot up your Hewlett Packard Pavilion computer. It worked this morning, but when you tried to boot up this afternoon, it would not work. What you noticed is that boot manager is noted as missing.
You have a Windows seven repair disk, but it would not fix anything at all. You tried using a repair disk, system restore, and Microsoft system repair. What can you do about this problem?
You can try to boot into any Windows safe mode options. Often times booting into Windows safe mode last known good configuration fixes a non booting Windows computer. To get into Windows safe mode, keep tapping an F8 function key after your computer BIOS splash screen displays and before Windows attempts to boot.
An advanced boot options menu should open. Select "Last known good configuration" from this menu.