I believe it's a Microsoft Open Agreement license for vendors or sellers in Southeast Asia. It's a special volume licensing program for government organizations, health organizations, educational institution, qualifying nonprofit organizations, and multinational organizations.
Did you buy your computer through one of these organizations as a qualified buyer (while you were a student, for example?) If no, it's possible the licensing terms were not met.
My Computer
At a glance
Win 7 Pro 64-bitIntel i5 2.4 Ghz8GB DDR3Intel HD 3000