Windows 7: EHDD + different pc's @ school

so basicly we got different pc's here on school and on all those pc's my key needs tobe activated BUT at somepoint it says that all of the uses have been used... but actually i keep switching systems... (i hope its a bit clear...) so can anyone tell me what to do? do i need to crack it? (hope i wont..)

If all of your keys have been used, then you will need to purchase a new one from MS...

1) A single Windows 7 key gives you the license to install only on a single PC. So you are violating the EULA the moment you try to use one key on multiple machines. Also, retail licenses (the kind you buy from a store in a box with a dvd key) are freely transferrable as long as you use it only on ONE computer at a given time. But if you switch hardware frequently, the online activation servers will not like it and fail you. In that case you need to call MS and do a phone activation.

Activate Windows 7 by Phone

2) If you need to run Windows 7 on multiple computers, you can buy a 3 user pack for $150 if you are a end user or contact MS for an enterprise license if you are a network admin.

3) What is this about cracks? Thats what your parents taught you?

yes but know that i use different pc's in 1 week 1 key wont be enough.... im not considering buying keys an entire school year around....

i got 1 hard disk which has Windows 7 installed now i got multiple pc's that all need that key tobe activated...

Then decide on which computer you are going to use and stick with that... why the need for all of these other computers...

So you're taking one hard drive and moving it among multiple computers? First of all, that's asking for system problems unless the hardware is 100% the same among all the computers. Second, you can't do what you're asking legally unless you purchase a license for each and every computer you are putting the drive into.

so my schools the problem? oki thats gonna be hard solving....also to recap:

1 HDD 5 times on tuesday i need to switch pc's...

If you will tell us what exactly you are doing, you'll be helped better.

im going to school .. ICT to be more specific