Mark Minasi's Tech Forum
Register Calendar Latest Topics Chat
 
 
 


Reply
  Author   Comment  
cj_berlin

Avatar / Picture

Senior Member
Registered:
Posts: 199
Reply with quote  #1 
Hi Group,

this is happening on a family member's Windows 7 Home Premium desktop so haven't had time nor resources to investigate properly but here goes:

  • the machine is constantly using 50% CPU by System Process (PID 4). The usage varies slightly along with the workload but a s long as everything is idle, there's 50% CPU consumption by PID 4.
  • it's a dual core AMD Athlon but the 50% are not one core used up entirely but are distributed between the cores - again, the distribution is varying in the area of 20%
  • a quick ProcExplorer/KERNRATE probe says it's NTOSKRNL.EXE and within that, AMDPPM.SYS that is causing the high CPU usage
  • NTOSKRNL.EXE has a last change date of January 18th. Numerous Windows Updates appear to have been installed on that day. Not sure about AMDPPM.SYS's time stamp
  • some time last week the machine refused to boot up due to ...whatever, the person in front of it wasn't a techie so pulled the plug and called me afterwards. When I arrived at the scene, it would boot up but CMOS clock was reset - however, they say it has reset itself before the event as some mails are dated 01/01/2001
  • the machine is behaving well otherwise. CHKDSK came up with nothing, same about SFC.

Any ideas?

Thanks a lot in advance!

__________________
Evgenij Smirnov

My personal blog (German): http://www.it-pro-berlin.de/
My stuff on PSGallery: https://www.powershellgallery.com/profiles/it-pro-berlin.de/
0
nikolas.e

Senior Member
Registered:
Posts: 111
Reply with quote  #2 
Hi CJ. i google it a little about amdppm.sys and says its  a software component of AMD Processor Driver by Advanced Micro Devices.

here is the link : http://www.file.net/process/amdppm.sys.html

Is the chipset drivers the latest on the computer?

Edited: Maybe you can disable Antivirus also for some time and see results?

__________________
Just call me the 1000Questionsguy
0
cj_berlin

Avatar / Picture

Senior Member
Registered:
Posts: 199
Reply with quote  #3 
Hi,

thanks for  the reply. I had figured out as much and, in fact, tried disabling the AV as well.

The chipset drivers are something I'll be looking into next time I am near that box (they're on vacation now so might be a couple of week). But, this being an old HP desktop, I seriously doubt there'll be driver updates I have not installed in the course of the last five years.

__________________
Evgenij Smirnov

My personal blog (German): http://www.it-pro-berlin.de/
My stuff on PSGallery: https://www.powershellgallery.com/profiles/it-pro-berlin.de/
0
cj_berlin

Avatar / Picture

Senior Member
Registered:
Posts: 199
Reply with quote  #4 
So, update, and sort of unexpected at that. Replaced the motherboard battery which (as expected) fixed the time issue but now it appears to have fixed the CPU usage issue as well. Seeing as "PM" in AMDPPM.SYS stands for "PowerManagement" it might not entirely come as a suprise but there it is.
__________________
Evgenij Smirnov

My personal blog (German): http://www.it-pro-berlin.de/
My stuff on PSGallery: https://www.powershellgallery.com/profiles/it-pro-berlin.de/
0
Previous Topic | Next Topic
Print
Reply

Quick Navigation: