Can't reboot the computer

[Guest]

Hello,i compressed my drive C and now i can't open it. it show the message "press Alt+ctrl+del to restart". can you show me how to solve it.

 

[buwish]

What did you use to compress the drive? Defrag?

 

[Memtamer1976]

Hello,i compressed my drive C and now i can't open it. it show the message "press Alt+ctrl+del to restart". can you show me how to solve it.