Windows 7: The Windows 7 product key you typed is invalid for activation error

I've purchased new Windows 7 Home Premium on the computer store.
On Setup, product key is valid.
After 4-5 days, I got this for several days.

Here's my diagnostic results, download and open this txt. file.
MGADiag results.txt
What should I do now?
I don't want to re-buy the product again because it's wasting my money.

Hi Jonathan,

Have you tried using the automated phone system to activate it?

I have used it many times when I have added new hardware and reinstalled windows. It only takes a few minutes.

To properly analyse and solve problems with Activation and Validation, we need to see a full copy of the report produced by the MGADiag tool
(download and save to desktop - http://go.microsoft.com/fwlink/?linkid=52012 )
Once saved, run the tool.
Click on the Continue button, which will produce the report.
To copy the report to your response, click on the Copy button in the tool (ignore any error messages at this point), and then paste (using either r-click/Paste, or Ctrl+V ) into your response.
- **in your own thread**, please
Please also state the Version and Edition of Windows quoted on your COA sticker (if you have one) on the case of your machine (or inside the battery compartment), but do NOT quote the Key on the sticker!
How to Tell

Noel, don't you see my attachment? It contains MGADiag tool report (not edited).

Sorry - too early in the morning
Use telephone activation



telephone activation (operator calls)
Click on the Start button
in the Search box, type
SLUI 4
and hit the Enter key
follow the instructions, but when asked which service you require by the telephone ansafone, do NOT reply - this should force an operator to respond, who can deal with you

I always use the phone option and I haven't had problems with at all.