Now that Windows 7 has officially launched we’ll get to see if PC manufacturers were a little overzealous in their anticipation of the new OS. Comments from AMD toward the end of last week suggested there might be a little too much PC stock because of the new Windows OS.

AMD has lowered its expectations for Q4 sales because of the high buildup for Windows 7. But a new OS doesn’t necessarily mean buying a new computer. For a lot of people, Windows 7 is just a fix for Vista – a remedy to that compelling desire to put fist through laptop when using Microsoft’s previous generation of operating systems.

If anyone’s to blame for misguided expectations, I’d say it’s Microsoft. Ballmer came out way too late in the game to say “hey, it might not be as big as we thought.” Prior to that it sounded like Windows 7 might save the planet.