extreeme cpu usage at idle issues.

[Pandora]

so this has not been a great past few weeks.

 

anyway im now on my back up pc.

 

havent used it in a few days and i come back to find it almost un-usable due to unknown cpu usage.

 

at idle with nothing really running aside from random processes my cpu sits at anywhere from 60-94% cpu usage. mathamaticly using task manager the cpu usage percents dont add up but whatever windows.

 

anyway something called svchost.exe Service Host: Local System (Network Restricted) is using consistantly 25-30% of the cpu usage. 

 

i have already run ccleaner, malwarebytes and rkill and have not found anything.

 

im really pissed off tonight because of other computer issues and i really want to decapitate people in chivalry.

 

any help would be much appreciated.  

[Hman1250]

It's not a virus.

http://windows.microsoft.com/en-ca/windows/what-is-svchost-exe

What CPU do you have?

[failblox]

It might be Windows Defender running an automatic scan of some files. That's my guess.

[Pandora]

It's not a virus.

http://windows.microsoft.com/en-ca/windows/what-is-svchost-exe

What CPU do you have?

i5 2500k at 4.5ghz

[Pandora]

It might be Windows Defender running an automatic scan of some files. That's my guess.

windows deffender is disabled. it persists through restarts.

[Slyhawk]

found this maybe helpful

 

I fixed my problem another way, apparently somehow a rootkit was causing the problem? It started out as a problem with all regular google sites, ads and services not being able to be displayed on my browser. I searched the web for answers and found that someone else had the exact same problem and used a combination of Rkill and TDSKill executable programs to stop malware processes and remove rootkits.I never thought of this before because i had no idea what a rootkit was. After rebooting google worked fine and i found that the particular service host.exe file that had been causing me so much trouble was gone and not running, also my computer runs smoother than ever!

 

http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/abnormally-high-cpu-usage-from-svchostexe-solved/eb38d25d-6bb2-47cd-80f2-5389c62337be?auth=1

[Pandora]

found this maybe helpful

 

I fixed my problem another way, apparently somehow a rootkit was causing the problem? It started out as a problem with all regular google sites, ads and services not being able to be displayed on my browser. I searched the web for answers and found that someone else had the exact same problem and used a combination of Rkill and TDSKill executable programs to stop malware processes and remove rootkits.I never thought of this before because i had no idea what a rootkit was. After rebooting google worked fine and i found that the particular service host.exe file that had been causing me so much trouble was gone and not running, also my computer runs smoother than ever!

 

http://answers.microsoft.com/en-us/windows/forum/windows_7-performance/abnormally-high-cpu-usage-from-svchostexe-solved/eb38d25d-6bb2-47cd-80f2-5389c62337be?auth=1

ran both those programs and nothing came up.

[Pandora]

no other ideas? should i just reinstall my os?