behavioral problems

It started about a week ago. I had downloaded a file that was supposed to be for windows media player. The next morning I got a error message that a memory location couldn't be read. I ran SAS/SB-S&D/Mbam & avast all with negative results but the longer I was on the computer the worse things got. I'd try to open one thing and something else would pop up. I couldn't get system restore to let me go back to Jan. for a good restore point. I finally gave up and reinstalled windows. Now when I change a setting and reboot the settings revert to the default setting, but not all of them and not all the time. Some times I get a name on the start menu, or not. Sometimes the mouse pointer will auto click to the default, sometimes not. I installed tweak UI to get rid of the balloons and a couple other things. Some times it works, or not.
When I first tried to install Mbam, I got the error message "HpSdAppCoreApp" wasn't available. When I tried to find this were it was suppose to be( C:\hp\tmp\src) there is no tmp. file in HP.
I reinstalled windows today and reran everything, the logs for SAS /SB-S&D/Mbam are now gone. The panels looks like a clean install. I've rebooted several times since then and still had the some settings revert to default.

 

I reinstalled from the hard drive. I used the "destructive recovery" option from the recovery console. I've actually recovered it three times since the problems started. I have no "clean media" to install from. The day after I posted when I started the computer I had no system tray. I ran SpyBot and it found a registry change telling the computer not to display the tray.SpyBot failed to notify me of the change but when I deleted it and rebooted the tray came back. I'm still having some issues with settings reverting to the default. Is there a way to scan windows OS before doing the recovery to see if anything might be compromised? SP3 was a download from the Microsoft site. Thanks..........