best practices

So this is something I just want to know. Basically I had this setup of four years broke off overnight last Friday. I was literally using it the night before, now I shutted it down no problems, but what I usually do is I'm lazy to turn off the avr before going to sleep, which means there's still...

how i can make my laptop b able to run toshiba usb while i don't know how to install driver of this one

The problem arose today when I was cleaning my desk. I unplugged the mouse to get it out of the way and now when I plug it back in it displays that error message. Everybody is telling me to reinstall the drivers, but I can't even click on on anything so I can't do any of that stuff. Any help...