Windows 10 OEM key for your device
Windows 10 OEM key for your device
your windows 7 oem key with your hp tower might allow you to upgrade to windows 10 for free, but it depends on the current status. since you're in technical preview and a hard drive failed, you likely need to proceed through the official channels rather than bypassing them. upgrading without proper authorization could lead to legal issues.
It seems there isn’t a direct method to upgrade from Windows 10 TP to Windows 10 with a Windows 7 key without Microsoft support. You might need to run Windows 7 and perform the update yourself.
It should work as long as you're not just using pirated software. You can install 7 and later upgrade to 10 once the update is available, even after the pirate version is removed. For clarity, I don’t recommend piracy—your company will allow Windows 10 upgrades.
It should work, though it's unclear whether using a Windows 7 or 8 key will allow installation from a disc or if the upgrade option is the only choice available.
I envision a brief pause to allow users time for backups before switching to Windows 10.