PC restarts after shutdown

[PianoMan55]

When I select Shutdown from the Start menu, it shuts down, then the hard drive (Seagate Barracuda 1TB) spins up audibly, then restarts. I tried the shutdown /p command and it still is restarting itself.

I went to Device Manager, selected the Intel network card, and disabled "Allow this device to wake the computer".

In the Advanced tab, there is nothing, that I could find, regarding "wake on magic pattern", nor "Wake on pattern match", unless I was looking in the wrong place .

In the Device Event Viewer there is a Kernel event for:

PCI\VEN_8086&Dev10EF&SUBSYS_304Log Name: Microsoft-Windows-Kernel-PnP/Configuration
Source: Microsoft-Windows-Kernel-PnP
Date: 12/26/2019 5:45:22 PM
Event ID: 430
Task Category: None
Level: Information
Keywords:
User: SYSTEM
Computer: WIN-C50CA63EQ9N
Description:
Device PCI\VEN_8086&DEV_10EF&SUBSYS_304B103C&REV_05\3&b1bfb68&0&C8 requires further installation.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
<System>
<Provider Name="Microsoft-Windows-Kernel-PnP" Guid="{9C205A39-1250-487D-ABD7-E831C6290539}" />
<EventID>430</EventID>
<Version>0</Version>
<Level>4</Level>
<Task>0</Task>
<Opcode>0</Opcode>
<Keywords>0x4000000000000000</Keywords>
<TimeCreated SystemTime="2019-12-26T23:45:22.630104400Z" />
<EventRecordID>19</EventRecordID>
<Correlation />
<Execution ProcessID="4" ThreadID="180" />
<Channel>Microsoft-Windows-Kernel-PnP/Configuration</Channel>
<Computer>WIN-C50CA63EQ9N</Computer>
<Security UserID="S-1-5-18" />
</System>
<EventData>
<Data Name="DeviceInstanceId">PCI\VEN_8086&amp;DEV_10EF&amp;SUBSYS_304B103C&amp;REV_05\3&amp;b1bfb68&amp;0&amp;C8</Data>
</EventData>
</Event>

I looked on the HP website for drivers, but says it is no longer supported. Ant way to get this up and running. Cannot afford a new PC, or even a refurbished from Walmart, which is what this PC is. Had it for 4 years and has been doing great until now.

Thanks for any help ASAP, please. Larry