I recently had to replace the hard drive in an Omnibook 510 and reinstall the operating system. Ebery goes fine until its time enter the product key and I receive the error message this CD Key in invalid. I phoned both HP and microsoft to see if they had an answer but neither provide much help. Microsoft did verify it as a vaild key but offer no further free assistance. If some out there knows how to fix this it would greatly appreciated. Thanks.
