Hello, I'm just a gamer that needs some help.
My computer gave me the BSOD [blue screen of death] when I started up Minecraft and then reboted. but when it did, it had to recover and repair disk C:. I know that that disk is very crucial to the computer because that's ware the OS files are, but when I tried it gave me a error message stateing that \windows\SYSTEM32\winload.efi was missing or damaged.
I really need help with this. Thank you for your time.

try the tips from this topic:

http://social.technet.microsoft.com/Forums/windows/en-US/7cd22ca7-2ec9-40f6-bf01-c7626ecc8c02/0xc0000225-file-windowssystem32winloadefi-is-either-corrupted-or-missing