Boot C: is changed to X

May 22, 2013
17
0
10,510
i Have an Acer x1930 with win7 home premium 64bit
I cannot boot it up
it keeps saying reboot and select proper bootdevice
in bios boot is marked X and there is something called efi device as first boot (what is that?) somebody has tampered with my machine.
 
Solution
Do you have any other devices connected to your machine such as external hard-drives or flash-drives or anything that would be assigned a boot letter?
Also, have you checked your BIOS to see what SATA ports are enabled? Perhaps your primary (likely SATA-0) port that holds your Hard-drive is disabled and it's seeing a different device.

thicks083

Honorable
Jul 21, 2013
90
0
10,660
Do you have any other devices connected to your machine such as external hard-drives or flash-drives or anything that would be assigned a boot letter?
Also, have you checked your BIOS to see what SATA ports are enabled? Perhaps your primary (likely SATA-0) port that holds your Hard-drive is disabled and it's seeing a different device.
 
Solution