USB ports giving me trouble

My HP Pavilion G6 has been into geek squad twice now, and each time it has come home and worked seemingly okay for about a week, and I have problems with it again.
In the beginning of it all, whatever has infected my computer corrupted 2 USB drives. I ended up putting the files back on the computer, as it had some important school documents. (If it helps, the USB drives were lexars.) I have also been experiencing problems with a portable mouse, (Logitech), where it will simply not work. When I try and shut it down in the start menu, It will fail, and give me a blue screen with "USB_BUGCODE_DRIVER" scrawled near the top in all caps. It will also, when on, have lines move up and down it. Like I said before, geek squad has looked at this twice, and hasn't solved the problem to a full extent.
Since it happened during the time that it quit working for the last time I downloaded "Monaco" on the steam store on a whim because it looked fun, and it was free. When I gave it access to my hard drive and launched it, it froze up and I had to use Ctrl+Alt+Delete to get the screen to go back to being normal. This is when the mouse quit working, and no buttons on the keyboard worked. I shut it off using the power button, and when I started it the mouse didn't work. This confused me, because I thought the Steam store was secure.
I have also tried to reset it to the day before it went foobar using the system reset, but it gives me the same USB_BUGCODE blue screen each time I try, because it has to shut down without the power button, even in safe mode the same thing happens.
I really need my mouse to work for the games that I play, having to use the touch pad for games like Skyrim is the most irritating thing I've ever experienced. I also need the USB drives to work for school projects, and papers. I haven't seen anything helpful on the internet so far, and I really don't want to pay for another useless visit to geek squad. Thank you for your time.