Before you begin
Save open work and back up important files. Use instructions for your exact device and software version. If Windows cannot start, see the startup guide.
Work through these checks
0 of 3 complete01Use Windows Activation Troubleshooter in Settings
- Use Windows Activation Troubleshooter in Settings
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
02Link Microsoft account in Activation settings before hardware changes
- Link Microsoft account in Activation settings before hardware changes
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
03Call Microsoft support for manual reactivation after hardware change
- Call Microsoft support for manual reactivation after hardware change
What to expect
Check whether the original symptom still occurs.
If it does not helpContinue only if this check applies to your device. Consult its manufacturer if you are unsure.
Possible causes
- Hardware changed too significantly for license re-validation
- Microsoft account not linked before hardware change
- Retail license used on multiple PCs
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