It started a few months ago and randomly shows the messege "bootmgr is missing press ctrl+alt+del" shortly after ASUS logo screen appeared, I just had to reset BIOS and it worked fine. I supposed that it was a Hard disk failure so I bought a new one, but now it still doing that. Then I thought that it might be a slot problem, so I change HD position, but it still didnt work. Recently I found out that if I only run one Hard disk installed on the laptot it work normally, so I deduced that it might be a BIOS problem or something else.
I also tried every single BIOS update available but nothing happened.
Also tried with clear windows 7 Install.
TIP: There is a little "beeping, squeaking... dunno " noise in the hard drive when this happens. Sometimes it also occured when i am logged into windows and the HD is re-recognized by OS.
There is no HD malfunction because i bought a new one and when a install only one in the laptop everything works fine.
I also discover that sometimes BIOS just won`t detect one of my hard drives.