No Items Appear in the Device Manager List When You Open It

[TheGeek]

No Items Appear in the Device Manager List When You Open It
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SYMPTOMS
When you open Device Manager, no devices appear in the list. Instead, a
blank window appears.

CAUSE
This behavior occurs if the Plug and Play service is turned off
(disabled).

RESOLUTION
To resolve this behavior, set the startup type for Plug and Play to
Automatic. To do so, follow these steps:

1. Click Start, click Run, type services.msc, and then click OK.
2. Double-click Plug and Play.

If you receive a Configuration Manager message, click OK.
3. In the Startup Type list, click Automatic, and then click OK.
4. Close Services.
5. Restart the computer