I'll accept that you did it all. Time to take it to the place that works on your PC and let them fix it.
Be sure to backup what you can't lose since they will likely reload the OS and more.
I have Lenovo all in one desktop model 3324 CTO Windows 7, Lenovo wired mouse and wired keyboard. I cannot control the curser it jumps all over even when not typing, even goes on line. I am not very computer competent, but have tried all solutions I've read and nothing has cured the problem. The computer is virtually unusable. Most discussions on this problem refer to laptops. I'm using iPad to type this. Any help greatly appreciated. Thanks