->RESTART UR SYSTEM AND THEN PRESS F8 AND THEN SELECT SAFE MODE AND LOGIN AS ADMINISTRATOR AND A WINDOW CALLED (WINDOWS IS RUNNING IN SAFE MODE) SELECT NO .THEN SELECT RESTORE MY COMPUTER TO AN EARLIER TIME THE NEXT SELECT FROM CALENDER SELECT THE DATE WHEN UR SYSTEM O/S IS GOOD(MAXIMUM IT WILL STORE THE O/S,APPLICATIONS AND FILES FOR 7-8DAYS) NEXT_>NEXT_.IT WILL RESTORE THE O/S AND DATA OF THAT SELECTED DAY THEN IT WILL RESTART AUTOMATICALLY AND BOOT NORMALY AND SELECT OK( UR PROBLEM WILL BE SOLVED)






OR

IN RUN TYPE MSCONFIG AND THEN SELECT LAUNCH SYSTEMRESTORE ->RESTORE

MYCOMPUTER TO AN EARLIER TIME->NEXT->SELECT THE DATE OF THE SAME MONTH->NEXT ->NEXT->IT WILL RESTORE FOR SOME TIME AND THEN IT WILL AUTOMATICALLY RESTORES THE DATA ,APPLICATIONS AND OS .THEN BOOT NORMALLY AND SELECT OK . UR PROBLEM WILL BE SOLVED..........

IF THERE IS SOME PROBLEM WITH UR O/S HOW TO DEAL WITH IT