You might try this, I use the following when using though scan disk & defrag. Disable the screen saver, + if you have the monitor turn off after a certain amount of time change that to never, get rid of the quick launch, that is on the task bar,get rid of cookies temp. files temp. internet files, then get rid of history,if that fails, click on alt. ctrl delete, & close down everything except, explorer & systray, you will have to do this about 6 time to get rid of the programs required, don't for get to restart computer,after, going to shut down then restart, plus you will have to put back the sceen saver + monitor, & quick launch, to disable the quick launch right click it click toolbars, then get rid of the check mark in quick launch, to bring back just put back check mark.