First I would run scannow. This site offers a good explanation: http://www.updatexp....cannow-sfc.html
Then I would run checkdisk. Open "My Computer" and right click on your hard drive. (C:\)
In the dialog box that opens choose the tab labeled Tools.
Check both boxes and click the Start
button. Windows will announce that it is necessary to reboot. Do so and wait for the process to complete. It will take some time.
When complete, go here: http://www.geekstogo...-Log-t2852.html
the instructions, and then post a HiJackThis log here: http://www.geekstogo...o-Here-f37.html
, along with full explanation of the problem and what you have done up to that point. A trained specialist will assist you.
If problems remain after being given a clean bill of health by your helper, post back in this thread, and we will assist in getting everything sorted.