You could run the chkdsk disk utility Click start run type cmd then type chkdsk/r/f which will scan for and attempt to repair any bad sectors and automatically fix any corrupt files on your Hard Drive. or an easier way to run the chkdsk utility Click start control panel administrative tools computer management ,disk management right click on your drive select properties click tools click check now click start two boxes automatically fix files and scan for and attempt recovery of bad sectors place then a tick in both boxes then select check now, start should schedule this task when restart
have no input while the chkdsk utility is in progress any input may further damage your computers Operating System and Hard Drive http://download.cnet.com/jetclean/3000-18512_4-75627788.html
JetClean tidies your registry, gets rid of junk files, deletes broken shortcuts, and attempts to give your computer that like-new feel again. also download the registry cleaned cc cleaner http://download.cnet.com/ccleaner/
You can also run a free registry scan using utilities from http://re7.info http://www.download3000.com/showarticles-182-0-date.html
System Utilities. http://www.download3000.com/showarticles-178-0-date.html
Optimisers and Diagnostics. http://advanced-systemcare.soft32.com/
One-Click Free System tool for PC tune-up and maintenance. Registry repair. Hope this helps.