After installing the Windows 10 Pro upgrade my computer crashed and will not reboot. I created the USB backup for Windows 10 Pro, but to reinstall the upgrade it asks for the product key. Where can I get the key?

I cannot restore nor do a recovery as I cannot access my drives. I have no internet access and all attempted reboots keeps going in circles and never boots. I updated from Windows 8.1 Pro, which also was a free Windows upgrade from Windows 8. Prior to the crash, Windows 10 Pro was slower and very often had 'not responding' when I tried to enter a web site. Has anyone had similar problems with Windows 10 Pro? Hi David, You can refer the link below and check if it helps. Why can't I activate Windows 10?: Can I clean re-install Windows 10 after upgrading?

Copy the link below to share your Clyp. By recording you agree to our Terms. Discard Upload. Record something else.

The only hardware changes that can negatively impact activation status once you upgrade to free version are the changes to the: • CPU • TPM • Motherboard replacement The following changes are examples of hardware changes that will NOT impact the activation status: • HDD/SSD • Video card • Adding extra memory If you replace the CPU, TPM, or Motherboard you may have to re-activate but this will not require a purchase of Windows 10. Hope this helps in resolving the issue. If the issue persists, do get back to us. We will be happy to assist you.