Have you tried running all the maintenance programs.
Disc cleanup
delete cookies (but don't disable them)
empty trash can
Defragment
Restart
Sometimes that's what it takes .. and after doing all the cleanup stuff - restart your computer - just do each item as I've listed it.
The whole process should take you less than 30 minutes - and it can save you lots of headaches. I do it at LEAST once per week.
thx DONE a lot of that.
Praying too.
lub