New
#31
Dear OP, I'd also disable autorun (autoplay) completely, details here: [starts off with... a lot of malware is spread via autorun, ya think?!? ]
Disable Autorun / Autoplay In Windows 7
Sometimes the USB checker within Windows 7 has been sluggish too, my motherboard came with a specific driver/tool, that could be hosed and mess things up too, although obviously u have malware.
My malware line of defense, is that Malwarebytes product, Spyware Blaster, and Spybot: Search and Destroy, all have a free non-active/non-monitoring component/version you can use.