check if your buttons are faulty, if so, order some new buttons, and solder them on like them came off. Here is a video to guide you. How to fix key fob.
a heat sink is VITAL for a device, it will not boot if the heatsink is, faulty, damaged, or misplaced, it MUST be in the device for boot to keep the device cool.
connect a flash drive with the copy of windows of your choosing, and then click the bios key(f12,f9) >boot device>your flash drive>f12>confirm>and reinstall windows.