As the title says, Device Manager stalls during Scan for New Hardware. Additionally plugging in a new USB device or anything else that has to do with Plug n’ Play hardware detection will fail to recognize new devices until a reboot (and likely the reboot will need to be a hard reset…)
If you’ve had this trouble here’s what solved it for me, and what MAY solve it for you:
First, try a BIOS update. This actually resolved my issue, so I didn’t need to try the method below. Try this even if your BIOS update doesn’t specify anything to do with Windows 8.x support/features.
If that doesn’t work (and maybe they just don’t have an update out to address the issue with your particular BIOS/MB) then try this from an elevated command prompt (and reboot:)
bcdedit /set disabledynamictick yes
This will disable a Windows 8.x feature that may be at the root of your issue. If after a new BIOS comes out you would like to re-enable the dynamic tick, then you can run the same command replacing the “yes” with a “no” and testing to see if that resolved the issue.
Finally, there are other reports that suggest that a Windows 7 driver installed in Windows 8 may be at the root of the issue. In my particular case I do have a manually installed Windows 7 driver for an XBOX game controller, but this wasn’t my issue.