Question System Interrupts 100%---or not?

[Beachhead1985]

Noticed my PC running slower than usual, brought of task manager and it shows CPU @ 100% due to 100% system interrupts.

Searched that on my phone and it gave a number of options; I chose to run a hardware diagnostic, as that seemed to be the worst case scenario. That came back clean.

Malware sounds unlikely...But I am running the scans now anyways.

CCLeaner says I have out of date drivers.

https://imgur.com/a/YTAE7Fx

View: https://imgur.com/a/YTAE7Fx


Device Manager says I don't. Just as well, can't find drivers for those online anyways.

Task Manager no-longer reports the problem.

Computer seems to run fine after the restart. What is going on here?

Thanks for your time.

 

[Beachhead1985]

Hm. Using the PC for a bit again and it is back to slow-as molasses and 100% system interrupts

 

[CountMike]

Hm. Using the PC for a bit again and it is back to slow-as molasses and 100% system interrupts

Try this, it replaces all system files with new one without damaging your programs and data.

View: https://www.youtube.com/watch?v=5ENjPL64wh0

 

[Aeacus]

and it is back to slow-as molasses and 100% system interrupts

This explains what system interrupts are,
link: https://learn.microsoft.com/en-us/a...down-my-pc?forum=windows-all&referrer=answers

As it says, causes to that are many. Hardware failure (or about to failure) is one option. I had high, 80-90% system interrupts when my HDD was giving up the ghost.

Since you didn't list your system specs (unless it's those in your sig), you have old PC, that may give up the ghost soon. If you have HDDs, better to check their status. Could be that one of them is failing.

 

[Beachhead1985]

Try this, it replaces all system files with new one without damaging your programs and data.

View: https://www.youtube.com/watch?v=5ENjPL64wh0

What does this do to fix the issue?

 

[Beachhead1985]

This explains what system interrupts are,
link: https://learn.microsoft.com/en-us/a...down-my-pc?forum=windows-all&referrer=answers

As it says, causes to that are many. Hardware failure (or about to failure) is one option. I had high, 80-90% system interrupts when my HDD was giving up the ghost.

Since you didn't list your system specs (unless it's those in your sig), you have old PC, that may give up the ghost soon. If you have HDDs, better to check their status. Could be that one of them is failing.

That is my sig, yes. I post here so often, I got tired of going back and finding it again every time. Last time, someone was nice enough to format it for me the way the board likes so I put it there so it sticks.

A normal drive health check do that for me?

 

[Aeacus]

A normal drive health check do that for me?

Well, you can use CrystalDiskInfo but for HDD, doing defrag (e.g MyDefrag) would show it fast. Since while usually 1TB HDD defrag takes few hours, for failing drive, it can take upwards of 17 hours. Note: do not use defrag for SSDs.

Another option is pulling all other drives from the system, except OS drive and look if system interrupts go away. If they do, issue is with one (or several) drives pulled. Then, plug them back one-by-one, to see at which point the system interrupts come back.

As for other hardware (e.g GPU), look if those need driver updates.

What does this do to fix the issue?

That is Windows restart/repair. Usually done after terminal commands doesn't help.
E.g:

1. Open Start.

2. Search for Command Prompt (or cmd.exe), right-click the top/correct result, and select the Run as administrator option.

3. Type the following command to perform system repair and press Enter:
SFC /scannow

4. If the scan found corrupt files and repaired them, run the same command again, just in case:
(if no errors were found, skip to step #5)
SFC /scannow

5. Once no errors are found with SFC /scannow, type the following command to perform a quick check and press Enter:
DISM /Online /Cleanup-Image /CheckHealth

6. Once this is done and when corruption is detected, type in another command for in-depth scan and press Enter:
DISM /Online /Cleanup-Image /ScanHealth

7. Once this is done and there are issues with system image, type in another command for fixing it and press Enter:
DISM /Online /Cleanup-Image /RestoreHealth

8. Once the system image repair is complete, type in another command and press Enter:
SFC /scannow

9. After last once completes, final command with Enter press would be:
exit

This closes the terminal window.

Note: SFC /scannow, DISM /ScanHealth and DISM /RestoreHealth may take a long time to complete. Do not close the terminal window or do not reboot the system, when each of theses scans/fixes are taking place, even when they seemingly get stuck.

However, i don't think issue would be with OS corruption. Instead, it looks to be hardware fault. But running those commands doesn't hurt.

That is my sig, yes. I post here so often, I got tired of going back and finding it again every time.

Do include PSU make and model (or part number) as well in your specs. Also, adding if PSU was bought new or used/refurbished + purchase date helps. Since often, this info about PSU is needed when troubleshooting PC hardware (and sometimes, software) issues.

E.g you can format it like so;
(Note: this is my PSU data.)
PSU: Seasonic PRIME 650 80+ Titanium [SSR-650TD] / bought brand new: Q3 2016.

 

[CountMike]

What does this do to fix the issue?

Eliminates problems with damaged or changed/altered system files and is closest thing to new windows installation.