I'm with that poster in #36, I also have a Vostro 1520 with Windows 7 and every couple of reboots this happens, not every reboot thankfully. I'm using OEM Windows 7 (64-bit), not a Dell version and no recovery software either, very clean install of the basics - Firefox, iTunes, updates, CCleaner, Defraggler, BitDefender Free.
I will take a look at services.msc and see if there's anything obvious like "Windows every-couple-of-weeks-bootsector-destroyer"!
I'm with that poster in #36, I also have a Vostro 1520 with Windows 7 and every couple of reboots this happens, not every reboot thankfully. I'm using OEM Windows 7 (64-bit), not a Dell version and no recovery software either, very clean install of the basics - Firefox, iTunes, updates, CCleaner, Defraggler, BitDefender Free.
I will take a look at services.msc and see if there's anything obvious like "Windows every-couple- of-weeks- bootsector- destroyer" !