Computer Hope

Hardware => Hardware => Topic started by: gold.ravinder on March 22, 2011, 06:00:54 PM

Title: High CPU Usage and overheating
Post by: gold.ravinder on March 22, 2011, 06:00:54 PM
Hi there,

I am using Compaq Presario C700, Win 7.

I have been facing a problem of high CPU usage by System Interrupts. At times is 100 % even when i check in Resources Monitor in Task Manager. It leads to overheating and unexpected shut down.

At times when i try to start the laptop, it does not start, just a blue screen comes nothing else.

I have updated all the drivers, still have the same problem.

please help me getting this solved if possible.

With regards,
Ravi   
Title: Re: High CPU Usage and overheating
Post by: Computer_Commando on March 22, 2011, 06:05:30 PM
What is CPU temperature at time of unexpected shutdown?
Title: Re: High CPU Usage and overheating
Post by: Broni on March 22, 2011, 08:55:49 PM
Usually, it goes the other way around.
Overheating may cause high CPU usage.
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 23, 2011, 04:20:08 AM
I did not notice the temp at the time of unexpected shutdown but at time its too hot that i need no heater at all.

I understand overheating causes high CPU usage but CPU usage in this case is high even after 5 mints after starting the system.

thanks
Title: Re: High CPU Usage and overheating
Post by: Broni on March 23, 2011, 10:21:15 AM
Download System Information for Windows (http://www.gtopala.com/siw-download.html) (SIW free version)
No installation required.

After it scans your computer, navigate to Hardware>Sensors and post all info from there.

(http://209.85.48.8/228/109/upload/p4467438.gif)
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 23, 2011, 03:43:08 PM
thanks for the reply, please find the required information........

king regards,
Ravi



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Title: Re: High CPU Usage and overheating
Post by: Broni on March 23, 2011, 03:59:00 PM
Well, 81C is definitely hot.
Max temp for your CPU is listed at 100C, but you can't be getting so close with idle computer.

How old is it?
Still under warranty?
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 23, 2011, 04:05:22 PM
no its not under warranty....... age is nearly 2 years old.

can we fix it or its just gone ????????????
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 23, 2011, 04:07:18 PM
its very loud and speed is bit slow too
Title: Re: High CPU Usage and overheating
Post by: Broni on March 23, 2011, 04:09:43 PM
Overheating does it.
Get a can of compressed air (do NOT use anything else) and clean well all vents.
Re-run SIW and see how it goes.
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 23, 2011, 04:15:14 PM
its too late to go to the market to get a can of compressed air.. will certainly buy in morning and let you know .... thanks and good night
Title: Re: High CPU Usage and overheating
Post by: Computer_Commando on March 23, 2011, 04:16:38 PM
This is not your make & model of notebook, but this is probably what's wrong.
http://www.varesano.net/blog/fabio/disassemble%20toshiba%20tecra%20a7%20notebook%20clean%20cpu%20fan
Title: Re: High CPU Usage and overheating
Post by: Broni on March 23, 2011, 04:20:33 PM
Let us know, how it went....
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 24, 2011, 03:52:25 PM
Good evening Guys........... How are you doing ???

I did clean my Laptop. yes off course it was too dirty near the fan. I did clean.

Its not that hot but CPU usage is still very high. please find the report after cleaning..........

thanks,
Ravi

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Title: Re: High CPU Usage and overheating
Post by: Computer_Commando on March 24, 2011, 04:28:28 PM
Core temps have dropped 20degC.  I see no info on CPU usage.
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 24, 2011, 04:35:31 PM
thanks for you post earlier. It motivated me to go ahead and clean the system.

Please let me know if we can fix the high CPU usage somehow ?

thanks
Title: Re: High CPU Usage and overheating
Post by: Computer_Commando on March 24, 2011, 04:49:52 PM
...Please let me know if we can fix the high CPU usage somehow ?...
How have you determined that your CPU usage is high?
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 24, 2011, 05:03:38 PM
from windows task manager. see below....

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Title: Re: High CPU Usage and overheating
Post by: Computer_Commando on March 24, 2011, 05:19:30 PM
You appear to be using Windows 7, which I don't have.  A little research indicates it might be a driver issue.  What is the exact make & model of your notebook computer?  Presario C700??  There's 100's of variations of this laptop.  Couldn't find any with Win7.
http://h10025.www1.hp.com/ewfrf/wc/pfinder?lc=en&dlc=en&cc=us&tool=&query=Presario+C700
Title: Re: High CPU Usage and overheating
Post by: Broni on March 24, 2011, 06:15:38 PM
61C would be acceptable.

Download Process Explorer: http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
Unzip ProcessExplorer.zip, and double click on procexp.exe to run the program.
Click on View > Select Colunms.
In addition to already pre-selected options, make sure, the Command Line is selected, and press OK.
Go File>Save As, and save the report as Procexp.txt.
Attach the file to your next reply.
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 25, 2011, 03:42:33 AM
please find the attached report as required. thanks

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Title: Re: High CPU Usage and overheating
Post by: maxum on March 25, 2011, 09:38:23 AM
How much time your computer has been hoverheating?
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 25, 2011, 09:42:19 AM
long time may be 5 months..

after cleaning the fan its not overheated like it was earlier but its very slow and CPU usage is still high ...
Title: Re: High CPU Usage and overheating
Post by: maxum on March 25, 2011, 11:55:16 AM
So, your computer must be scrap by the cause of overheating.
(overheating for a too long time can melt internal pieces)
Title: Re: High CPU Usage and overheating
Post by: Broni on March 25, 2011, 05:12:41 PM
You have Hardware Interrupts high CPU usage.
That may incorrect IDE controller setting, or hard drive problem.

Open Device Manager and....

Check Primary and Secondary IDE settings: Device Manager -> IDE ATA/ATAPI controllers -> Primary or Secondary IDE Channel -> Properties -> Advanced Settings. Look at the Current Transfer Mode field.
See, if it's in PIO mode instead of DMA mode.
Title: Re: High CPU Usage and overheating
Post by: gold.ravinder on March 26, 2011, 03:47:22 AM
I did check. There is no primary or secondary, instead there is Channel 0 and channel 1 mentioned.

When i checked the properties, for both of channels 0 (two channels 0) Enable DMA is clicked.

regards,
Ravi 
Title: Re: High CPU Usage and overheating
Post by: Broni on March 26, 2011, 09:41:28 AM
Run hard drive diagnostics: http://www.tacktech.com/display.cfm?ttid=287 (or http://www.bleepingcomputer.com/forums/index.php?showtopic=28744&hl=hard+drive+diagnostic)
Make sure, you select tool, which is appropriate for the brand of your hard drive.
Depending on the program, it'll create bootable floppy, or bootable CD.
If downloaded file is of .iso type, use ImgBurn: http://www.imgburn.com/ to burn .iso file to a CD (select "Write image file to disc" option), to make the CD bootable.
For Toshiba hard drives, see here: http://sdd.toshiba.com/main.aspx?Path=ServicesSupport/FujitsuDrivesUSandCanada/SoftwareUtilities#diagnostic

Note : If you do not know how to set your computer to boot from CD follow the steps HERE (http://www.hiren.info/pages/bios-boot-cdrom)


Title: Re: High CPU Usage and overheating
Post by: patio on March 26, 2011, 09:49:33 AM
So, your computer must be scrap by the cause of overheating.
(overheating for a too long time can melt internal pieces)

Post of the Month finalist...
Title: Re: High CPU Usage and overheating
Post by: alexK on March 26, 2011, 12:38:54 PM
For now my advise is to examine Event Viewer: Application, Security and System.
Trace what was running at the time of high CPU and overheating.

If your PC was running Windows Defender, Antivir or other Virus Checkers and in the process of installing Windows Updates all at the same time (usually after an overnight shutdown and a cold start in the morning), than this  this will surely rev-up the CPU and may cause overheathing. These processes are all competing for resources. Stagger these processes over the day. As you have SIW installed, check the Throughput Traffic, and which processes are running.

Also, ensure nothing is blocking the air intake and exhaust (tablecloth, too close to desk or wall).
Check that fan for ANY play, replace if needed.
Check if the intake/exhaust really functional by hanging a sheet of paper in front of the ducts. I have a brand new Laptop and found the Intake was 50% blocked by a Factory Installed piece of plastic. I still wonder what the purpose was!
 

Meanwhile, I have installed SIW on three PCs. It kept me happy for a couple of days. Thanks for the Tip.