I have a Toshiba laptop with pre-installed 64-bit Windows 7 operating system. A backup copy of the system is stored on the hard drive. I have a 32-bit Windows 7 DVD-ROM but if I install this I will lose all the data on the hard disk drive including the 64-bit
Windows 7 and its backup.
Unfortunately I appear to have a virus which has corrupted the boot critical file C:\CIdll When I turn on the computer it tries to fix the problem, loads files but then says it can't fix it. I've tried booting in safe mode, restoring to last good configuration, but nothing works - I'm just taken back to the Startup Repair attempt. (I'm currently using a borrowed laptop) When I read the diagnosis it has mainly said it cannot determine the cause of the problem, but at one point it said the boot critical file C:\CIdll is corrupt.
I have tried the Windows Seven Forums but nothing works - I can't do a Repair Install without a 64-bit installation disk and although I was able to follow the steps in 'How to recover from an infinitely looping startup repair loop without reinstalling windows' it didn't work.
The only thing I can do is go to Command Prompt in System Recovery Options. can anyoneguide me through a solution from there please?