You re-installed the operating system from Acer recovery disks or a hidden
partition on the laptop? If you used acer's own recovery procedure then the
product number 'should' be valid. I would suggest contacting Acer but i
answered a similar post a few weeks ago regarding an Acer and while i
suggested contacting acer the reply the guy got back was, quite simply, if
you are going to tinker with our machines, then you must pay for a copy of
the operating system. He 'apparently' hadn't been supplied with recovery
You say 'when you typed in your product key' at what stage is this
happenning? With recovery disks/partition the product key is already
embedded in the image so should need to be inputted.
Alternatively you could telephone the Microsoft Automated Activation line
(free phone) to see if it will activate via telephone. If it won't activate
via the automated route you should be put through to a 'real' person. But
this will only happen if the automated route fails.
John Barnett MVP
Windows - Shell/User
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"Phu" <Phu@discussions.microsoft.com> wrote in message
>I bought this Acer Laptop (with Windows Vista) from Walmart about 2 months
> ago. I used it for two months and i realized that it had too many errors.
> It couldn't update no matter how many times i tried. Therefore, i decided
> format everything and reinstalled my OS. However, when i typed in my
> key, it reported as an invalid key. I couldn't reactivate my Windows.
> may i reactivate my Windows?
> This post is a suggestion for Microsoft, and Microsoft responds to the
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