I would try System Restore.
But other than that I can only guess with so few details.
Yesterday I had it-today I don't. I fear I may have uninstalled something I shouldn't have when I was trying to get rid of unused programs. To make matters worse, I efficiently emptied the recycling so I can't even reinstall everything or can I? Is there somewhere else on the computer where a record is kept re: what was in the garbage or what was uninstalled? (I watch T.V.) Please,please can someone help this idiot???