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#11
Switch to the default Aero theme then
Click on the Start Button type in Services In the search box and then click on Services
Scroll down until you see Desktop Windows Manager Sessions Manager select it in click on the Stop text and let it stop after that click on Start text and see if that works. Your screen may blink when you do this.
Jerry
use sfc/scannow. this will reset any system files you may have themed, ie .folders. wmploc , system clock etc, but should sort your problem, then re theme your pc. i believe you dont really need gamebooster. you havent filled in your system spec so i cant be sure but gamebooster is for pretty old ish machines ie vista with 1 GB of ram
SFC /SCANNOW Command - System File Checker - Windows 7 Forums
Honestly, given the amount of time you have spent already, I would just opt for a clean install. If you plan ahead, it can take less than two hours, and you'll be back to where you are now, without the issues.