Go Back   TechArena Community > Technical Support > Computer Help > Windows Vista > Windows Vista Performance
Become a Member!
Forgot your username/password?
Register Tags Active Topics RSS Search Mark Forums Read

Sponsored Links



explorer.exe using 50% CPU time when idle

Windows Vista Performance


Reply
 
Thread Tools Search this Thread
  #1  
Old 21-03-2008
Member
 
Join Date: Jul 2005
Posts: 36
explorer.exe using 50% CPU time when idle

I am using Windows Vista on a desktop. Today it was in Hibernation mode for about 6 to 7 hours and when I came back and started working, I found that my explorer.exe is consuming about 50% of CPU resources. This computer was working fins since I assembled it about a year ago but the problem started just today itself after coming from hibernation for such a long time.

I kept Task manager opened on the screen with no other programs running in the background and left the pc for about 30 minutes. Still I found that explorer is using 50% of the CPU. Isnít it irritating? I thought could be any virus problem hence ran the complete scan with my updated Norton antivirus but that dint found anything suspicious.

Can anyone here tell me what is the problem with my system ?

Reply With Quote
  #2  
Old 06-06-2008
Member
 
Join Date: Jun 2008
Posts: 2
Yes, same thing

Yeah, me too have noticed such things on my Vista. Am having core 2 duo, where one core shows 50% usage by explorer.exe whereas other core allows me to operate fairly normally. Also, let me tell that I have two Administrator account on my system, and this problem happens on only one of them. When I check the same by logging into another one, it use to be normal usage.

I strongly doubt it is the User Profile issue. We should find out some workaround for the same.
Reply With Quote
  #3  
Old 08-06-2008
Member
 
Join Date: Jun 2008
Posts: 2
It appears to be a corrupted ntuser.dat file

I tried to find out the root cause of this problem and heres what I found, ntuser.dat file. For testing the same I made a temporary user on my Vista computer and checked. I got CPU usage of just 2% with all start menu entries fine. Later I copied the user profiles from my first Admin account where my explorer.exe is eating up 50% of CPU to this new user profile and suddenly ntuser.dat file reached upto 50% CPU.

So, the problem is with User Profile itself. You can find out some tool to repair your user account or simply create a new user account and see if you can overwrite the same.
Reply With Quote
  #4  
Old 25-10-2009
Member
 
Join Date: Oct 2009
Posts: 1
Re: explorer.exe using 50% CPU time when idle

Are you using any high definition wallpaper ? In my case it was Windows Vista 64bit OS where i was using Dreamscene (animated wallpaper). Later when i removed the same by switching to a static image wallpaper, i found that cpu usage goes straight to 0. You can give it a try.
Reply With Quote
  #5  
Old 06-11-2011
Member
 
Join Date: Nov 2011
Posts: 1
Re: explorer.exe using 50% CPU time when idle

I had also same problems.i didn't find the exact solution on the net.So i rethought over that what i had some activities in 4 days before,cos' the problem
had been continuening from 3-4 days earlier.I had installed driver pack 11.so i restored the system before this installed date.wow ! , everything was fine.
Reply With Quote
Reply

  TechArena Community > Technical Support > Computer Help > Windows Vista > Windows Vista Performance
Tags: , ,



Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads for: "explorer.exe using 50% CPU time when idle"
Thread Thread Starter Forum Replies Last Post
DCOM error 0x800706be (RPC_S_CALL_FAILED) after idle time. Numinel Windows Server Help 3 19-10-2010 06:11 PM
Why does Windows 7 log off my user account after a period of idle time Pocumtuck Operating Systems 6 05-08-2010 05:02 AM
Computer idle for a time it shuts off. Chilton Windows Software 3 12-08-2009 03:42 PM
windows vista explorer crashes when idle jester81 Windows Software 3 18-10-2008 03:31 PM


All times are GMT +5.5. The time now is 10:05 AM.