Is there a solution to my specific problem, or should do a fact. reset

I have a Windows 7, 64-bit Dell computer.
One day, while going through some un-wanted programs and un-installing them, my theme suddenly changed from aero to basic theme. From there on, everything went horribly wrong; my audio and video ceased to work(they work in safe mode), Microsoft Security Essentials, Dell Webcam Central and Audio FX Engine have been un-installed without my consent, Sometimes it wont even start up in normal mode(I log in but it stays on the loading screen),windows explorer wont work, I can't go into programs such as "Services" for it says I have my theme will start in aero in normal mode and then switch after a few minutes, It states on multiple accounts when I want to open something "Error Message: Not enough storage is available to complete this operation" One along the lines sof,"You do not have the authority to access memory" and recently a Windows 32 message saying,"This service cannot accept control messages at this time".I can no longer rate my computer, my drivers seemed to un-install and I am at my wits end. I've seen multiple reports of Aero theme automatically switching to basic after a minutes of login, yet no solution(working solution) was provided. Doing a Please advise me on what to do. As I'm sure you've noticed, I'm not the brightest person, please carefully explain each step.

Did you try to use System Restore to set your computer back to a date before the problems started? If that doesn't work, boot from your Windows 7 installation disc. When you get to the screen that gives you the option to repair Windows, select that option and let it complete its repair. If you're still having problems, you're best off doing an install over the top of the installed OS (will place new files into a new Windows folder), or complete a new, fresh installation of the OS. If you can, be sure you back up all pertinent files/folders and drivers you'll need for the OS to work properly.

Yes, I've done 3 factory resets back BEFORE it this event started. Nothing worked; I've had MalwareBytes, HitmanPro, PandaCloud Antivirus running with no success..