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CPU Usage is 100% until i open task manager.


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So recently my FPS has gone down quite drastically on CSGO, especially clear to me was that i'm getting a lot of fps drops and stuttering when im shooting someone etc... so i tried to figure this out and the only thing i could even think of was that my CPU was running at 100% and its probably going past its limit in gunfights. I tried opening task manager and it always shows CPU 100% for a second and then it drops down to whatever value below 30%, i have a suspicion that theres a bitcoin miner on my PC but i don't know how to find it. My FPS on CSGO drops below 100 frequently and my specs are:

8GB HyperX Fury DDR4 2133MHz 
SSD Samsung 850 EVO 500gb
HDD 2TB Barracuda
ASRock H110M Motherboard

I've also seen an older topic regarding this sort of thing and i've done some steps like scanning with Malwarebytes, Adwcleaner and FRST, here are my logs if anyone needs them. I hope we can find a fix for this and hopefully its not a hardware problem. Thanks!

Malwarebytes Results.txt Addition.txt FRST.txt AdwCleaner[C00].txt AdwCleaner[S00].txt

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Hi,     :welcome:

My name is Maurice. I will be helping and guiding you, going forward on this case.

Please follow my directions as we go along.  Please do not do any changes on your own without first checking with me.

If you will be away for more than 3 consecutive days,  do try to let me know ahead of time, as much as possible.


Please only just attach   all report files, etc  that I ask for as we go along.

The initial display on Task Manager needs to be discounted.  You need to allow it a few seconds to settle in.

See this thread about exactly this same behavior   


NOTE:  Task Manager is not an ideal mechanism  to judge about a suspected "infection".

Task Manager is not a good way to check for infection.   We can use a number of security tools & programs to search for and find a infection.

Task Manager display on the first few seconds ought to be ignored.  Wait a minute or two for the displayed lines to settle down.



Do not use Task Manager as a guauge.

Thanks for the reports you attached.


Know that Malwarebytes for Windows Premium does protect against bitcoin hijackers.


I would suggest a free scan with the ESET Online Scanner
Go to https://www.eset.com/us/home/online-scanner/

Look on the right side of the page.  Click Scan Now
It will start a download of "esetonlinescanner_enu.exe"
Save the file to your system, such as the Downloads folder, or else to the Desktop.

Go to the saved file, and double click it to get it started.
When presented with the initial ESET options, click on "Computer Scan".

Next, when prompted by Windows, allow it to start by clicking Yes

When prompted for scan type, Click on Full scan
Click on the radio selection "Enable ESET to detect and quarantine potentially unwanted applications"   and click on Start scan button.

Have patience.  The entire process may take an hour or more. There is an initial update download.
There is a progress window display.
You should ignore all prompts to get the ESET antivirus software program.   ( e.g.  their standard program).   You do not need to buy or get or install anything else.

When the scan is completed, if something was found, it will show a screen with the number of detected items.  If so, click the button marked “View detected results”.

Click The blue “Save scan log” to save the log.

If something was removed and you know it is a false finding, you may click on the blue ”Restore cleaned files”  ( in blue, at bottom).

Press Continue when all done.  You should click to off the offer for “periodic scanning”.


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Hi Maurice, thanks for the fast reply, i realize that Task manager isnt a very good gauge and i'm trying to eliminate the bitcoin miner theory before i check for any hardware issues. I'm doing the ESET scan as we speak but it will probably take a while seeing as i do have a lot of files, i will get back to you as soon as it's finished.

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I would like for you to do this next following cleanup task after the ESET scan has finished.

You have mentioned suspecting some sort of potential "slowdown".   I notice one batch-task job that is not needed & is a bit unusual.  It is a batch job ( command window)  that does something with the soundmixer & explorer.   There is also some 3 other task jobs about crash reporting for Nvidia.   Those also are not needed or desired.


This custom script is for  Sk1dz  only.

Close and save any open work files before starting this procedure.  I am sending a  custom fix script to do some cleanups.  


Please Close and save any open work files before you start this next step.  It may involve a Windows Restart at the end of it.

I am sending a   custom Fix script which is going to be used by the FRST64 tool. They will both work together as a pair.

Please RIGHT-click the (attached file named) FIXLIST and select SAVE AS and save it directly ( as is) to the FRST sub-folder on the DESKTOP

The tool named FRST64.exe   tool    is already on the FRST sub-folder of the DESKTOP.

Start the Windows Explorer and then, open the FRST folder.

Double click FRST64

  to run the tool. If the tool warns you the version is outdated, please download and run the updated version.

IF Windows prompts you about running this, select YES to allow it to proceed.


IF you get a block message from Windows about this tool......

click line More info information on that screen

and click button Run anyway on next screen.


on the FRST window:
Click the Fix button just once, and wait.




PLEASE have lots and lots of patience when this starts. You will see a green progress bar start. Lots of patience. This run here should be fairly quick.
If you receive a message that a reboot is required, please make sure you allow it to restart normally.
The tool will complete its run after restart.
When finished, the tool will make a log ( Fixlog.txt) in the same location from where it was run.

Please attach the FIXLOG.txt with your next reply later, at your next opportunity




Edited by Maurice Naggar
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Thank you for the reports.   The custom fix run succeeded.   The ESET scan removed 1 riskware item, 1 potentially unsafe item, & 1 old setup file for CCleaner.


We can do a different scan.

The Microsoft Safety Scanner  is a free Microsoft stand-alone virus scanner that  can be used to scan for & remove malware or potentially unwanted software from a system.

The download links & the how-to-run-the tool are at this link at Microsoft



Let me know the result of this.

The log is named MSERT.log 

the log will be at  %SYSTEMROOT%\debug\msert.log   which in most cases is


Please attach that log with your reply.


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Thanks for this report.   It is up to you whether to run the Full scan.   It could help answer your main concern.   Just be aware the Full scan can run for hours   ( all depends on the number of files on this pc  & the speed of hardware.).

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I can help you to see that there is no malware.   Beyond that, I would have to point you elsewhere.

Windows 10 has the Microsoft Windows Defender which can run the Windows Defender Offline scan.
Windows Defender Offline in Windows 10 can be run directly from within Windows, without having to create bootable media.

Click the Windows Start menu button on the Taskbar, select Settings icon. Then choose Update and Security.

In Windows Settings  >>> click on Windows Security from the left side list.

Next, In Windows Security section:  Click on the grey button Open Windows Security

next click on the blue Scan options

Look down the options list.  Tick on Windows Defender Offline scan.   Then click the grey "Scan now" button.

and let it scan the system.

Keep in mind that the design and what is scanned by Windows Defender is a whole different design from Malwarebytes. But do let me know how this scan goes and what the result is.

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  • 4 weeks later...

Glad we could help.

If you need this topic reopened, please send a Private Message to any one of the moderating team members. Please include a link to this topic with your request.

This applies only to the originator of this thread. Other members who need assistance please start your own topic in a new thread.



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