Overdriving my processor - just keeps running

Avast Free Antivirus / Premium Security
1

Avast Premium

For days now, even after reboot, my processor fan keeps running at high speed. Checked Task manager. Found this:
“Avast Service… 40%CPU 35%memory 1%disk Power Usage-VERY HIGH”

I suspended all shields and waited an hour. No change.

What is going on? I feel like Avast is just burning up my PC.

2

[b]Repair & Clean Install of Avast → https://goo.gl/t7aJGq[/b]
Repair Avast:
Open the Avast User Interface > Menu > Settings > Troubleshooting > Repair App. > Restart the Computer or,
Control Panel> Program and Features (Add/remove program)>Select Avast> Select Repair. Reboot when completed
https://www.avast.com/faq.php?article=AVKB204

If Repair doesn’t fix the problem, try the following:
If your Avast settings are not the default settings and you want them restored after the Clean Install, follow this before removing Avast.
https://goo.gl/TXjM7h
Clean Install of Avast:
https://goo.gl/4Ptzkf
If you need additional help with the Clean Install, watch this:
https://youtu.be/p-h3myRD51A

3

Got the same Problem with Avast Free Antivirus 11.2.2261

AvastSvc.exe *32 uses 50% of my CPU-Power all the Time !

Repair and removing Avast (with Avast Clear) and a new clean install doesn’t help at all !

If I disable AvastSvc.exe *32 the CPU-Usage goes down to 1% !

4

Thanks Bob. Your first suggestion (Repair App) did the trick. After reboot, silent running.

Ahhh.

5

Happy to help. Thanks for reporting back. :slight_smile:

6

Got the same problem here on :

  • Win7x64 SP1
  • system functional since 7 years with no software changes, no windows updates : don’t tell me - i know and don’t care about win updates. The fact is here that the system was UNCHANGED except for Firefox portable that is updated (EDIT : last update 2 years ago - but uBlock filters updated)
  • high security standards (tight firewalls + safe behavior) and no/low source of possible contagion : scans with MalwareBytes, Avast, Clam give no alerts with updated databases (2021.08.26)
  • some weeks ago Avastsvc started to go up to 50% and never goes down ; unknown trigger ; i identified the problem 5 days ago but the PC was sluggish since 2-3 weeks
  • a full scan hangs at time = 0 on svchost and CPU usage goes up to 99
  • “create dump file” on avastsvc process makes CPU back to normal but again 50% after x minutes ; trigger unidentified
  • avstclear and cleanuninstalls are no use
  • versions 9 to 11 have the same behavior
  • turning shields off has no effect either before or after CPU peaks to 50%
  • i did a factory reset (2013 system image) with no internet access and installed avast 9 with offline VPS update → 50% CPU usage
  • i did a factory reset (2013 system image) and installed avast 21 with online VPS update → no high CPU usage but my weak system has difficulties to hold the pace with avast 21
  • i did another factory reset with no internet access and installed avast 11 with no VPS update → no high CPU usage
  • i’m updating VPS now on version 11… waiting for a CPU peak (EDIT : confirmed after reboot and 10 minutes)
  • Blues Brother, whom i suppose is not using my computer, has the exact same problem

As of now, i’m guessing : a VPS update is the trigger on high CPU usage for 9-11 versions

I can’t reasonably make an avast update : we’re talking a weak 2013 netbook here. Or maybe i should install avast 21 with all shields at minimum?

Anyone has an idea?

7

One reboot later and 10 minutes after reboot, CPU peak at 50%, never going down.

(EDIT)
Manual scan still hangs at t=0 on svchost and CPU peaks at 99%.
With no action it stays at 99%.
With “create dump file” it goes down to 50% and never lower.

8

Is Malwarebytes resident? Since version 4, it’s been a system hog.

9

First of all, thanks for answering!
No background software is running at all, except tiny wall as firewall.
Malware bytes was installed just to do a complete scan.