OEM Vs Retail Copy of Windows

Recently i wanted to move my OEM copy of Windows 7 professional to another system as my laptop crashed,but the following were the startling relevelations.

OEM versions of Windows 7 are identical to Full License Retail versions except for the following:

– OEM versions do not offer any free Microsoft direct support from Microsoft support personnel

– OEM licenses are tied to the very first computer you install and activate it on

– OEM versions allow all hardware upgrades except for an upgrade to a different model motherboard

– OEM versions cannot be used to directly upgrade from an older Windows operating system

Some links to read more on the licensing issues.

http://social.answers.microsoft.com/Forums/en-US/w7install/thread/fae7b2ab-c530-45e6-aeb3-cc55cf7b9231

FAQS

http://oem.microsoft.com/script/ContentPage.aspx?pageid=552846#faq3

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