i am using dell inspiron and i use this factory earlier it works. now i tried it but it shows an error that parameter is incorrect. please help me
If you are getting an incorrect parameter error when attempting to restore the computer using ctrl+F11 then either you have:
a) a failing hard drive (run the hirens CD like Brett suggested)
b) the recovery partition has been tampered with and cannot be fixed
If it will not work your only option is to restore the computer via the traditional method using an OS CD from DELL or if you created recovery media.