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Why is my pc switching off by itself within 20minutes?

By r_chabie ·
had antivirus installed and run updates regularly, but still the problem persists.

Checked for threads and it come up with "tribalfusion", some cookie that i then delete, but it keeps creating itself. Anyone knows?

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re: Why is my pc switching off by itself within 20minutes?

by toy_soldier40 In reply to Why is my pc switching of ...

hey,
Could be a number of things. could be over heating or faulty power supply.

Have you changed any thing in the box?

pete

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check out...

by zack247 In reply to re: Why is my pc switchin ...

http://techrepublic.com.com/5208-6230-0.html?forumID=101&threadID=320047&messageID=3191430&tag=content;leftCol

its one of my posts, but they helped me figure it out, maybe they can help you too. i tried what they said, and now my computer works like it should

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So

by Jacky Howe In reply to check out...

setting the Set Performance Levels has solved it for you.

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A couple of things to try

by Jacky Howe In reply to Why is my pc switching of ...

Power Supply
A common problem is the System mysteriously shutting down. This is often caused by the Power Supply being Overloaded, these safety measures ensure that it automatically shuts-down.
Over-voltage Protection
Short-circuit Protection
No-load Operation
Over-current Protection
Over-temperature Protection (Optional) Not all PSU's support this feature

Remove the Power cord from the PSU to discharge the Capacitors in the Power Supply. Then press the Power button for 10 seconds to discharge the Capacitors on the Motherboard.
Plug the power cord back in and see if it will start. If it does replace the Power Supply Unit (PSU).

Reseat the Central Processing Unit

Faulty Fans, Dust and Grime build up on the Heatsink restricting air flow. Remove the Power cable from the rear of the System and disconnect the Video cable. I would give the inside of the case a blowout with compressed air. When blowing air through the fans make sure that you physically stop them from spinning, as they may generate power and damage something. Use an Anti-Static Wrist Strap to ground yourself or by placing the back of your hand on the Power Supply Unit and not moving your feet. This will prevent electrostatic charge from building up and by not taking this precaution it is possible that you could inadvertantly cause damage to the PC from an electrostatic discharge.

Then remove the Heatsink, giving it a thorough clean and reseat the CPU applying new CPU grease. If the Fans spin freely when you give them a spin they are probably OK. If there is resistance replace them.

Clean the golden edge of each memory stick with a soft rubber/eraser, remembering not to touch the golden edge of the memory stick. Check with one stick at a time, remembering to disconnect the power from the PC as you replace them.

Also check the Capacitors around the CPU for swelling or bulging.


If you find anything with these tools, turn off System Restore and run them again in Safe Mode

Download Spybot - Search & Destroy and install it. Update it. http://www.safer-networking.org/en/download/index.html

Download Malwarebytes Anti-Malware, install it and update it.

<a href="http://download.bleepingcomputer.com/malwarebytes/mbam-setup.exe" target="_blank"><u>Malwarebytes</u></a>

* Double-click mbam-setup.exe and follow the prompts to install the program.
* At the end, be sure a checkmark is placed next to Update Malwarebytes' Anti-Malware and Launch Malwarebytes' Anti-Malware, then click Finish.
* If an update is found, it will download and install the latest version.
* Once the program has loaded, select Perform Quick Scan, then click Scan.
* When the scan is complete, click OK, then Show Results to view the results.
* Be sure that everything is checked, and click Remove Selected.

If you encounter any problems while downloading the updates, manually download them from here and just double-click on mbam-rules.exe to install.
<a href="http://malwarebytes.gt500.org/mbam-rules.exe" target="_blank"><u>mbam-rules</u></a>

I would keep scanning with it until it is clean by closing out and rebooting and running it again.

Run this Rootkit Revealer GMer
<a href="http://www.gmer.net/index.php" target="_blank"><u>Gmer</u></a>

FAQ
<a href="http://www.gmer.net/faq.php" target="_blank"><u>FAQ</u></a>

Let us know how you get on.

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Best bet

by jairuskagondu In reply to Why is my pc switching of ...

My best bet is to check if the fans are working properly and if you are working on xp try installing software sandra

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Overheating could be one reason

by London Freelancer In reply to Why is my pc switching of ...

I have same issue with my Dell laptop have Home Vista.
It used to shutdown without any user intervention.

The only thing I noticed is the laptop was very hot at the time it shuts down.

I cleaned up the fan and inside with compressed air and it looks to be fine for the moment.

Regards,
<a href="http://codeguru.services.officelive.com/default.aspx">Freelancer</a>

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