Always High CPU Usage and crash

[Ashwyn]

I am using Avast Free AV 7.0.1466.Ever Since its Installation,i notice 100% CPU usage and 98,456K Memory Usage in AvastSvc.exe . Well this happens when a download completes and its totally normal that an antivirus checks downloaded files after download completion...But in my case the CPU Usage
Spikes upto 100% and never gets back to normal . The 100% Usage of AvastSvc.exe continues on forever and my pc crashes . I never had this problem on older versions.

Is this a Bug? IF SO Do i have to revert to an earlier version?

[DavidR]

When you get this high CPU up to 100% is the avast tray icon actually rotating ?
As even if it did go up to 100%, which I would consider unusual

Have (or did) you another Anti-Virus installed in this system, if so what was it and how did you get rid of it ?
Even if this is an earlier version of avast I would suggest a clean reinstall of avast.

Some information on your system would also be helpful, OS, CPU, RAM ?

What other security based software do you have installed, anti-spyware, firewall, etc. ?

[Ashwyn]

Yes the avast tray icon spins endlessly.I only have avast running on my pc now.
Previously i used ESET NOD32,just about a year ago ,had no problems then had to switch to avast as its license expired.

My System Specifications
Intel Core i3-3217U@1.8Ghz
Intel HD Graphics 4000
2GB DDR3 RAM
Windows 7 32 Bit

used only windows firewall and did not try any other antispyware solution

[DavidR]

Your system spec is well up to the task, certainly better than many older systems not experiencing this; so there has to be something else in the mix. If the icon is rotating avast is scanning something, avast doesn't initiate these scans; that is down to activity on the system (and you say you only have avast running). This is how an on-access, resident AV works when a file is run/opened/modified, etc. it is first scanned.

You mentioned 'when a download completes' how are these things downloaded ?

Would you confirm that you actually uninstalled NOD32 not just disabled (as that would still have the drivers running) ?

I would also suggest running their own uninstall utility:
Uninstall possible remnants of previously installed AVs see, http://singularlabs.com/uninstallers/security-software/, this has a collection of manufactures removal tools, so that should remove any remnants, registry, etc.

A new program version has just been released, see http://forum.avast.com/index.php?topic=107531.0;topicseen for info and download locations. I would suggest a clean install of this version after ensuring all remnants of NOD32 are gone.

[Ashwyn]

Yep I the problem is gone now . I updated it to the latest version v 7.0.1473 and avast is running fine now. before updating i tried the uninstallers you mentioned but there was'nt and remnants left behind.But anyways i fixed now

THANK YOU VERY MUCH

[DavidR]

You're welcome.