Windows 10: Baffling Situation --reported CPU time

I have an Acer W10 laptop computer, with the latest updates

This is very strange. If I go into Task Manager, Performance Tab, it will show my CPU time. Say it says 2 hours and I power down via the Windows icon/Power. If I power down for an hour, then reboot and check CPU time, it says 3 hours (it should not). But if I shut down using a shutdown icon (%windir%\System32\shutdown.exe /s /t 0), then reboot and check the time, it correctly shows a few seconds upon reboot. Also, if I do a restart, the CPU time is correctly reset.
This is confusing. Any ideas?

A shorter way of phrasing my question: why doesn't the CPU time get reset when powering down and restarting.

Mel

:)

 

[FS][US] CPU, NForce4 skt 754 motherboard (with PCI-express slot, rare!), DDR RAM

bump, CPU's stepping is now listed.

 

Wrong CPU reported?

The CPU Freq reading is normal as the CPU frequency Steps depending on the load

If you install Conky, you can see on there the frequency stepping up and down depending on what the handset is doing.

 

INCORRECT CPU FREQUENCY READING

Hello Muhammad,

CPU usage depends on the applications that are open to your device. To isolate the problem, we suggest that you answer the following questions:

• Can you include a screenshot of the CPU reading?
• Have you tried performing a
  clean boot to eliminate software conflicts?
• What troubleshooting steps have you done so far?

Looking forward to your response.