Windows 7 64-bit I had turned on the safe mode.Then, I click a link on a website. Then the firefox browser do not respond, then the browser closes, other program and explorer closes and cannot be reopened. Then a warning message shown by Window ,it said the system has serious mistake and need to restart. Problem started, in restart ,window ask me to do chkdsk, it showed a lot of mistake, it takes 2 hours to recover the orphaned files. During the period, I slept for awhile. Then ,I discovered a message in window recovery mode(colored)said it cannot auto recover the computer. I restart the computer but blue screen shows(it shows bad session or what, I forget).I restart again, it goes the window recovery screen (black and white)and goes into window (colored),after checking, a message said it cannot auto recover the computer again. This cycle repeats. Also, I check the C: drive has only 162 MB and have no files.I tried to transfer files to it,but it stops after a few of files transfered.It is not yet full. D: drive has 31GB and contains no file. E:drive has 150GB,the files inside are the original C:drive.The original D: drive(contain system recovery files) has gone. When I am in Window recovery mode (colored), it shows OS: windows 7(E: ) local disk, but when I choose the cmd tool form the menu, it shows "administrator: X\" in the title. I guess Returnil has removed the changes I made in Returnil Safe mode as I cannot found them in E: drive. But it fails to put it back the C: drive. Window cannot found the restore point also. the problem happened yesterday. Today,when I choose the start Window normally, black screen shows and then it restart again. If I choose recovery mode, it goes to window recovery mode(colored) again.A message said it cannot auto recover the computer again. This cycle repeats. I hope you can help me to repair my computer ,thank you very much and forgive my poor English, and I am not using English Window system so there maybe some mistranslation.