Well if it were me...I'd write down all your software....make sure you know the sources....
Format the drive and reinstall to "out-of-the-box" state. You might have a root kit and they can be as severe as staying resident in firmware....
I had anomallies on my laptop and cleared the bugger down to bare bones and rebuilt my computer, kept it off the network ....removed all the bloat-ware, installed a clean copy of antivirus got the updates for the AV then turned on windows updates and got the 75+ updates and then loaded all the rest of my software...system has never run so good....
I would not waste time and just bite-the-bullet and blow the install away and reinstall fresh...
It;s a pain but worth the work...then you know what you have...
T
