Why can't I install Windows 7 SP1 on my computer?

Episode 1214 (1:07:43)

Tony from Ontario, CA

Tony is trying to upgrade Windows 7 to Service Pack 1 so he can update to Windows 10, but he can't get it installed. Leo says that sometimes antivirus software can get in the way. But it can also happen if he's trying to update SP1 piecemeal. Tony should download the entire service pack and install it all at once. Paul Thurrott at Thurrott.com says he can download the Windows 10 ISO directly and install it from scratch and then verify that he has Windows 7 by inputting his serial number. If not, he should backup his data, wipe the drive, and give it a fresh install of Windows 7. That should allow him to update it to SP1. Then he can update to Windows 10.

The chatroom suggests rebooting into SafeMode with Networking and try the update. That way he's stripped it down to the bare minimum drivers enabled.

Chatroom - Here's a few suggestions

- Troubleshoot issues installing Windows 7 Service Pack 1 (support.microsoft.com)
- Microsoft quietly rewrites its activation rules for Windows 10 (ZDnet)
- ProduKey v1.80 - Recover lost Windows product key (CD-Key) and Office 2003/2007 product key. (nirsoft.net)