Check for the repeat errors in Event Viewer>Admin view to google text and ID# to find how others have resolved it.
If possible find out which Program is generating the .dll error to uninstall (or System REstore to before it's install) and then reinstall it. Or if you recently uninstalled a program before this began, reinstall it to see if it stops, then uninstall it again using Revo Uninstaller.
Uncheck everything except your AV and gadgets/stickynotes in msconfig>Startup as other programs are freeloaders on your RAM/CPU at all times and can spy on you. If you use a factory connection manager, etc., change to Windows 7's superior utility.
Run SFC /SCANNOW Command - System File Checker
to see if there are damaged System Files as often occurs with .dll errors.