Hi,
To run Scan Disk you may have to disable all running programs with the exception of “Explorer”. You can press the 1. control, 2. Alt, and 3. Delete keys in that order. You should then get a “Close Program” pop up window listing the programs that are currently running. You then left click and highlight one of the running programs. When that program is highlighted then go to the End task tab, left click on it. The program may immediately at that point disappear from the Close Program box OR if it doesn’t usually in approx 15 secs a second Close Program box may appear. At that point click on the second box “end task” button and at that point the highlighted program should disappear. You have to do this to all but the “Explorer” program entry. DO NOT delete that one. After removing all of the programs except the “Explorer” program you will most likely then be able to run Scan Disk successfully. HTH. Have a good day. 