The format should be quick (as long as you choose quick format
.
Installing Windows will take less than an hour, but a few times during the installation, it will stop and need feedback from you, so you can't start it and then go out.
Windows will need to be activated, but this can be done over the internet. There is also aa phone service, you call the free number that the computer tells you, you type the challenge code into your phone, and then type the response from the phone service into your computer. If there is a problem (never happened to me, though it should have
), you will have to speak to a person. The automated service will ask you whether it worked, if it didn't, you can be transferred to a person. Alternatively, just crack Windows
.