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Windows 7: Re installed Windows 7 and now invalid Product Key

25 Sep 2010   #11
Microsoft MVP


Sounds like firewall or AV bloatware was blocking you from using your new machine at startup. The only way to get a new computer nowadays that is "good as new" is to clean reinstall Win7 yourself, as maker's no longer provide clean disks or support in order to enforce the bloatware which provides most of their profit margin.

Many tech enthusiasts find a clean-copy DVD of their OS version and reinstall using the OEM Product Key on the COA sticker on machine. Any installer can also have all versions unlocked using the ei.cfg removal tool. Windows 7 Universal Installation Disc - Create

Make your Recovery DIsks or save a Win7 backup image of the entire HD first so you have a path back to factory condition if needed to service hardware warranty.

The installer is mostly driver-complete, with newer arriving quickly via optional Windows Updates. Any drivers then missing in Device Manager can be found on the Support Downloads webpage for your model computer or device.

Install updates and then programs slowly over time to gauge performance after each. Don't let any programs write themselves into msconfig>Startup as they become freeloaders on your RAM/CPU and can spy on you. I only allow AV and gadgets.

Use a lightweight free AV like MS Security Essentials which works perfectly with Windows 7 Firewall.

When it is finished, clean and order the HD perfectly using state-of-the-art free CCleaner then Auslogics Disk and Registry defraggers monthly.

Then save a Win7 Backup image externally so you never have to reinstall again, just reimage the HD or replacement using DVD or Repair CD. Backup Complete Computer - Create an Image Backup

You can still call Tech Support during the first year to sort issues or hardware warranty, just don't tell them you have clean reinstalled as they might not support it.

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 Re installed Windows 7 and now invalid Product Key

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