will not start !!

[westentertainer]

hi last night i must have downloaded something that caused my mouse to behave eracticaly so i reebooted into win 7 ,the coloreud flag screen appeared and then it rebooted with an error ,,,windows\system32\winload exe Oxc0000428 windows cant veryfy digital signiture i have tried everything repaire disk will not system restore
oh and my drive letters have changed from C For win7 to D and vise versa i realey dont want to reinstall has iwill loose a great deal hope someone can help cheers

 

[cybercore]

hi last night i must have downloaded something that caused

Some more info would be good, like downloaded what?


1. From 7 dvd try startup repair again
2. From the 7 dvd's startup repair options >> command prompt >> sfc /scannow
3. Try Kaspersky Rescue Disk 10