You'll need a disc image (.iso file) for this method. If you're installing windows, you can download one from Microsoft. Once you have that, you'll want to download a utility called "Rufus" that creates bootable USB drives from ISO files. You'll need a drive that can store at least 8gb, and it should be blank (or not contain any important files, as it will be deleted as part of the process). Plug in your drive to the computer you'll use to create the bootable media, open Rufus, select the disc image you want to use and the target drive, and click start. Wait for it to finish. Make sure the computer you're formatting is off, install the drive on that computer, and turn it on This next paragraph only applies if it doesn't boot into the USB when you turn it on: Your computer probably already tries to boot from USB first, but if it doesn't, you might need to change the boot order in the bios. When the computer is booting, press whichever button it advises to enter setup. Do not change any other settings, find...

If you're referring to the GFCI test button on the plug head, pushing the reset button should fix it. The button being pushed in slightly is part of its normal function. If that part of the plug head is damaged it's probably safer to replace the plug entirely with another gfci plug head.

Yes, the part you need is called a "Cleaning Head Module" and includes the brush mount as well as a new vacuum fan motor. It's held in with 4 phillips #1 screws after removing the bottom cover, and it's available online from the the manufacturer and probably elsewhere as well.