Factory Reset - Still Non-responsive, lagging, and failed startup

I followed them to the very letter. Every single step. No problems throughout the installation or running any of the test.

Performance issues: Programs are still non-responsive, I cannot stay on something long before it starts freezing up. Internet, any other program...even tried paint. I haven't used it much today because it has gotten so bad. Sometimes the screen will completely freeze up and I can't do anything, other times, I can continue to type and the words will eventually show up. The start menu would appear then not go away for awhile. If I click on something, it would stay there for a bit.

Other issues: The mouse will randomly start moving around and there's nothing I can do. It isn't necessarily clicking on anything, like a virus, but I have no control over it. It'll disappear then reappear, then just go insane. Typing this around 60 wpm just took over 13 minutes because of freezing and lag issues.

What programs have you reinstalled?

Have you limited your msconfig>Startup list to only the AV and gadgets/stickies/Skydrive if you use them?

Run the hardware tests in Troubleshooting Steps for Windows 7 now
then work through the other steps.

No programs other than the updated drivers for Internet and simple things through Windows updates. I will work through the addition steps, but it just isn't working all that great so far. Yes, I did the startup stuff also.

Next test your RAM - Test with Memtest86+ for 5-6 passes or overnight, and HD with maker's HD Diagnostic and Disk Check .

All of the test above came back with a pass, no errors -- etc. Also, I cleaned out the inside of my computer two weeks ago, so I know it isn't a cleaning issue.

I'm going through and checking event errors, but this clearly takes some time because I am insanely busy. If you have any other suggestions, let me know. Thank you.

Keep us post on the results of Troubleshooting Steps for Windows 7
as there may be additional steps based on your feedback.

I have followed all of the steps, I seem to be getting a lot of random errors but nothing that crazy. I googled them and it seems fine, I installed "core temp" to test the fans, but I am not sure what is good and what is bad -- as far as my computer is concerned. Maybe it is just an internal problem with hard ware, possibly the fan. I just cannot tell exactly what it is anymore.