Hi, I need to change the OS on my HP G62 Notebook PC from the pre-loaded Windows 7 Home Premium 64-bit to the Professional version to run some software for a college project. I have bought a Windows 7 Professional DVD as the Anytime Upgrade option isnt available where I live. What is the best option to achieve the best performance - upgrade or full clean install? Any pointers for the clean install would be appreciated.
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