If you are still having this problem.
Next time windows runs okay, go to COMPUTER, right click your harddrive and choose PROPERTIES
click the TOOLS
tab where it says ERROR CHECKING click the check now button.
It will offer to do this next time it boots, suggestion, don't do it unless your not going to need the computer for a while as it can take several hours to complete.
let it run and see if that does not fix your problem.
Edited by MrBruce1959, 19 February 2010 - 10:00 PM.