Windows 7 - What did i Disable?

I've been messing around with my laptop's internal settings lately, and i must've done something to make my laptop do this... It sometimes randomly goes back to original aero graphics... like the one where its that solid color of blue and all. But if i simply run the troubleshooter to enable transparency, it goes back to normal. It usually goes back to the original aero when im closing a game(or some large program) and when i turn of IoBIt's gamebooster, or when i turn off the turbo mode in Tune-Up Utilities 2010(Which is great btw)

Here is an enclosed ss of the issue...

EDIT: That second error is irrelevant, i was jst making sure a certain theme worked/or didnt.. it didnt

Looks like you have changed the desktop window manager settings in services, check to see if it's still set to auto start.

Don't know what you did, but type services.msc in the start search box , right click Windows Manager (properties) and select 'automatic'.

Yea, i had tried that before, but i cannot seem to find the "Windows manager" nor the one GriM stated.. Here's a ss -->