Actually, a lot depends on the type of Windows license you have. If you got your license with your PC you *may* have to get a new one with a new motherboard. On the other hand, if you purchased your license separately yo= u *probably* can continue to use it. In that case you *may* have to reactivat= e the license, which *might* involve a phone call. -- Bob Ammerman RAm Systems =20 -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of veegee Sent: Wednesday, January 30, 2013 3:33 AM To: Microcontroller discussion list - Public. Subject: Re: [OT]:Getting a new Motherboard On 2013-01-30 2:32 AM, Luis Moreira wrote: > Hi Guys, My main PC at home, which is about four years old and running=20 > windows 7, is slowly developing faults as time goes by and I think it=20 > is time to get a new motherboard for it. My question is, if I fit a=20 > new mother board with probably new processor and memory do I have to=20 > do a clean installation of windows7. I really don't want to do that...=20 > Thanks. Best Regards How Winbloze calculates whether or not you have to purchase a new license i= s how "different" your hardware upgrade is from your original hardware. Certain parts collect more "points" and contribute more towards it forcing you to buy a new license. A motherboard and CPU are pretty much what make a computer a computer, so I'm willing to bet that you'll need to buy a new license and activate again. But I don't *think* you'll have to "reinstall", maybe just reactivate with a new license. Extremely easy to get around it though. But of course, you shouldn't do it because it's wrong and Santa will put you on his bad boy list. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membershi= p options at http://mailman.mit.edu/mailman/listinfo/piclist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .