9710747190 :
I just erased all those contents in c disc..windows 7.. nw the system is not starting... hw can i recover those files nd how shud i start the system...when i on the system its says tat" tght compressed nd press ctrl+alt+del"??? How to over come this
That's not very odd that it's not starting since you erased the operating system.
How and why did you do that? If you did a secure wipe, there is pretty much 0 chance outside of some pricey data recovery methods to get anything back.
If you want to recover the files, buy a new hard drive, use a Windows disk to install Windows on that new drive. Plug in your old drive, install and run a recovery program like Recuva to scan that drive. Do not try to do anything with the disk you deleted stuff off past scanning it.