100% CPU

G

Guest

Once in a while, the fan of my notebook is running loud and Windows is very
slow. So I go to Task Manager and I see 100 % in CPU, then I go to the
Processes tab and I see that iexplore.exe is around 99 % in CPU. But not
Internet explorer window is opened. So I end this process and the CPU usage
goes to normal percent and the fan stops his noise. It happens many times.
How can I fix that ?
 
S

siljaline

Jacques said:
Once in a while, the fan of my notebook is running loud and Windows is very
slow. So I go to Task Manager and I see 100 % in CPU, then I go to the
Processes tab and I see that iexplore.exe is around 99 % in CPU. But not
Internet explorer window is opened. So I end this process and the CPU usage
goes to normal percent and the fan stops his noise. It happens many times.
How can I fix that ?
Click to expand...

CPU fans on laptops are notorious for being noisy and defective.
Contact your PC supplier of OEM for diagnostic tools specific to the fan.
Rule that out first, post back your findings.

Silj

--
siljaline

MS - MVP Windows (IE/OE) & Security, AH-VSOP
_________________________________________
Security Tools Updates
http://aumha.net/viewforum.php?f=31

Reply to group, as return address
is invalid that we may all benefit.
 
G

Guest

Last summer, I brought my notebook to a repair store (because my fan often
run loudly) who found out that there was a lot of dust around the fan. After
removing the dust, it worked fine.
But this time, the fan runs much less often, only after I close an Internet
Explorer window and I still see a iexplorer.exe which takes 95-99 % of CPU.
This shows that it's a problem linked to Internet Explorer because if it was
running right, iexplorer.exe process should not be there after I close the
Internet Explorer window.

Jacques
 
S

Sandi Hardmeier - MVP

iexplore.exe running at 99% with no window open is indictive of malware
infection. Please follow the instructions at the URL below:
http://inetexplorer.mvps.org/archive/answers_8.htm#deltree

Its perfectly understandable that your CPU fan would go into overdrive if
CPU is at 100% for any longer than a second or two at a time.. the heat
generated by a flat-out CPU can be staggering.

I sincerely doubt that your CPU fan would be defective.

--
__________________________________________
Sandi - Microsoft MVP since 1999
http://www.ie-vista.com
http://inetexplorer.mvps.org

Inetexplorer has changed - for instructions on how to
find old URLs, go here:
http://msmvps.com/spywaresucks/archive/2005/05/14/46971.aspx
 
G

Guest

Thanks.
On the link that you gave me, I don't see which instructions to apply. Can
you help please ?
Jacques
 
S

siljaline

Sandi Hardmeier - MVP said:
iexplore.exe running at 99% with no window open is indictive of malware infection.
Click to expand...

Either/or - that was my next step - laptop fans are a nuisance, heard it from
several OEM reps in a deposition recently.

Silj

--
siljaline

MS - MVP Windows (IE/OE) & Security, AH-VSOP
_________________________________________
Security Tools Updates
http://aumha.net/viewforum.php?f=31

Reply to group, as return address
is invalid that we may all benefit.
 
S

Sandi Hardmeier - MVP

No.. not "either/or". 99% CPU usage by iexplore.exe with no browser window
opens makes malware first step, not next step.

Laptop fans, faulty or otherwise, do *not* cause 99%+ CPU usage, whether it
be iexplore.exe or any other process.

99% CPU usage by *does* cause high laptop fan usage, triggered by heat
generated by the high CPU usage.

--
__________________________________________
Sandi - Microsoft MVP since 1999
http://www.ie-vista.com
http://inetexplorer.mvps.org

Inetexplorer has changed - for instructions on how to
find old URLs, go here:
http://msmvps.com/spywaresucks/archive/2005/05/14/46971.aspx
 
S

siljaline

Your thread, then, Sandi.

Silj

--
siljaline

MS - MVP Windows (IE/OE) & Security, AH-VSOP
_________________________________________
Security Tools Updates
http://aumha.net/viewforum.php?f=31

Reply to group, as return address
is invalid that we may all benefit.
 
R

Robert Aldwinckle

Sandi Hardmeier - MVP said:
iexplore.exe running at 99% with no window open is indictive of malware
infection.
Click to expand...
....


Especially if it is really called iexplorer.exe as he wrote subsequently.

<EG>


However, I would also check for TIF corruption,
especially if the Empty...when closed option is being requested.


Remember the good old days when such symptoms used to have
logical explanations? <sigh/> ; )


Robert Aldwinckle
---
 
G

Guest

I run antivirus and antimalware and spyware and I still have the same problem
once in a while.
What is TIF corruption and how can I check it ?

Jacques
 
R

Robert Aldwinckle

....
I run antivirus and antimalware and spyware and I still have the same problem
once in a while.
What is TIF corruption and how can I check it ?
Click to expand...


If you suspect TIF corruption you can start by deleting it
in the normal manner. E.g. Tools, Options, Delete Files...
and all offline content.

However, that procedure only refreshes the TIF's index.dat.
In order to resize and reinitialize it you would have to delete
that account's TIF folder using another account or another OS.


HTH

Robert
---
 
G

Guest

I deleted the files and offline content.
Then I clicked on Start-Search-All files and folders, I typed TIF and I
found no TIF folder.
What is a TIF folder and how can I delete you ?

Jacques
 
R

Robert Aldwinckle

Jacques said:
I deleted the files and offline content.
Click to expand...


Then you're done.

Then I clicked on Start-Search-All files and folders, I typed TIF

Why?


and I found no TIF folder.

Good.


What is a TIF folder and how can I delete you ?
Click to expand...


Go back to that dialog I pointed you to and read the label of the section
where you found that Delete Files... button?

"Temporary Internet files" == T.I.F. (TIF)


Do you still have problem symptoms?
Did you check out Sandi's suggestions yet?


Good luck

Robert
---
 
S

Sandi Hardmeier - MVP

Be careful with CCleaner. It wipes out NTUninstall folders making it
impossible to uninstall things like, oh, Internet Explorer 7...
 

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