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Windows 7: dxm.exe causing random spikes of high CPU usage.

13 Dec 2013   #1

Windows 7 Home Premium 64-bit
dxm.exe causing random spikes of high CPU usage.

Hi, recently I've been experiencing random spikes of lag in my laptop. I use AllCPUMeter gadget to monitor my systems. The symptom was that CPU usage would increase highly without any major programs being runned. This had happened while my laptop was idle and after a few seconds of hang, my Aero crashes ( turns to basic for a second ) and restores itself. Then, my Nvidia driver would pop up saying the display driver crashed. I've tried opening task manager to find out what was using up power when it starts to spike and unfortunately, the usage would always return to normal as soon as I open it.

After some digging around, I used Process Explorer and determined that dwm.exe is the culprit. However this seems to be a second exe as you can see from the picture I've attached. It shows the high usage and a bit below another dwm.exe.

Some other things I've noticed is rundll32.exe went up to approximately 10% at times but not while the spikes happen. Could any of this be related to my friend unplugging my laptop ?

This is not a huge problem exactly but it is annoying. I cant watch a movie for 10 minutes without the screen going black and the temperature soars extremely high. So if anyone has any idea how to deal with this problem, please help me.

Update : It seems that the lag occurs when the laptop is idle and will continue until I move the mouse or interact with the laptop.

Attached Thumbnails
dxm.exe causing random spikes of high CPU usage.-dwm.png  
My System SpecsSystem Spec
13 Dec 2013   #2

Windows 7 Home Premium 64Bit

Done a quick search and found this removal of dxm.exe - Virus, Trojan, Spyware, and Malware Removal Logs

If it is what it says it is id Recommend running some programs to get rid of it

download AdwCleaner by Xplode and save to your Desktop.
  • Double click on AdwCleaner.exe to run the tool.
    Vista/Windows 7/8 users right-click and select Run As Administrator.
  • Click on the Scan button.
  • AdwCleaner will patient as the scan may take some time to complete.
  • After the scan has finished, click on the Report button...a logfile (AdwCleaner[R#].txt) will open in Notepad for review (where the largest value of # represents the most recent report).
  • The contents of the log file may be confusing. Unless you see a program name that you know should not be removed, don't worry about it. If you see an entry you want to keep, let me know about it.
  • Copy and paste the contents of that logfile in your next reply.
  • A copy of all logfiles are saved in the C:\AdwCleaner folder which was created when running the tool.
Using AdwCleaner v3: Scan & Clean:
Double click on AdwCleaner.exe to run the tool again.
Click on the Scan button.
AdwCleaner will begin to scan your computer like it did before.
After the scan has finished...

This time click on the Clean button.
Press OK when asked to close all programs and follow the onscreen prompts.
Press OK again to allow AdwCleaner to restart the computer and complete the removal process.
After rebooting, a logfile report (AdwCleaner[S#].txt) will open automatically (where the largest value of # represents the most recent report).
Copy and paste the contents of that logfile in your next reply.
A copy of that logfile will also be saved in the C:\AdwCleaner folder
My System SpecsSystem Spec
13 Dec 2013   #3

Windows 7 Home Premium 64-bit

Thanks for the reply but I actually meant dwm.exe. I'm very sorry to have caused the confusion in the title.
My System SpecsSystem Spec


 dxm.exe causing random spikes of high CPU usage.

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