When I bought my laptop it came with an original windows and there is an activation key at the bottom of the laptop I already formatted my laptop and used it once can I use format it again and still use the key? and is it limited or not? because I remember I had an anti-virus and the key was limited for 3 uses only a little help would be very appreciated people,
You can reinstall as many times on the original machine as you want. There is a possibility that online activation may not work, but, in that situation, I've always been able to do it over the telephone activation system.