How many times can I install windows 7 on the same machine?

[[Maxx]]

I need to reinstall windows 7 home premium on my computer, but i need to know how many times im able to reinstall it on the same machine, if someone could help it'd be delightful.

[Anders118]

You should be able to install to the same machine an unlimited number of times.

[MuThing]

As many times as you wish, you'll need to contact Microsoft's automated service to get a code for you to use it again however, but it's a 5 minute process and it works flawlessly.

[Barbarian887]

As long as it isn't OEM you should be okay to install it over and over again

[editline]17th January 2014[/editline]

OEM has something like 3 installs and then you're SOL if you ever need to install again, even if it's on the same hardware.

[Curls]

I reformat every year

never had any issues, even when sharing with a grandparent. (then again he probably just had his own key)