I have an HP mini and a windows/system32/....

ok so last night i turned off my HP MINI via the menu, which also mentioned that their are "New updates installing on my computer. I go to school the next day, its working slow mo as it sometimes does but I either wait for whatever little msg to pop up or turn it off and turn it back on again. Bt this time, I GOT THE BLACK SCREEN!!! Every option I choose (and repair system s not an option on here) i get "Windows caound not start because of the following file is missing or corrupt: /WINDOWS/SYSTEM32/CONFIG/SYSTEM" Nothing is working and i have no clue what to do, so can someone please help me! THERE ARE NO CDS THAT I CAN INSTALLL BECAUSE THERE IS NO DISK DRIVER TO PUT THAT IN! ALL I HAVE IS A FLASH DRIVE PORT