Many PC's have BIOS settings that enable smart fan usage, when CPU reaches certain temp, the fans kick on high, when it reaches a higher temp, auto shutdown. I do not reccommend disabling these until you find out what is overheating. I had a PC that randomly shut off, something was shorting out on my mobo.
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Step 1: b> WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. http://www.kitchentablecomputers.com/static.php - rules Only work inside the computer case when the power has been switched off and disconnected. Never open the power source. Some of the below steps recommend removing physical parts within the computer. While in the computer it is highly recommend that you be aware of ESD and its potential hazards Every computer comes with its own internal cooling system. Dell workstation desktops are no different. Your computer's cooling system consists of a heat sink and cooling fan. The function of the cooling fan is to regulate the temperature of your computer's processor. If the fan stops working your processor will overheat and cause damage to your motherboard. Fortunately, Dell desktops have a built-in alert system that tells you when your fan stops working.
Shut down your desktop computer. Disconnect the power cable from the computer's back panel. Then disconnect any external devices. Rotate the computer so the back panel is facing you. Attach an electrostatic discharge (ESD) strap to your wrist and its wire clip to the outer casing of the computer. Lay the computer tower on its left side. Press on the side panel release buttons situated on the top and bottom panels. Grasp the side panel and rotate it away from the computer until the internal contents of the computer are accessible. Locate the cooling fan duct near the center of the motherboard. Lift the duct off of the cooling fan so it is in the upright position. Disconnect the fan's power cable from the motherboard. Disengage and remove the retaining clips from each side of the cooling fan assembly. Lift the cooling fan out of the motherboard. Set it aside. Check you CPU make sure its securely seated and has thermal grease http://www.hardwaresecrets.com/article/Thermal-Compound-Roundup-February-2012/1490 Use a clean paper towel to wipe the excess thermal grease from the processor's surface. Apply a thin coat of thermal grease to the processor's surface using a cotton swab. This is important; if you skip this step, your processor will fry as soon as you power on your computer. Place the new cooling fan over the processor. Press down on each retaining clip until the cooling fan snaps into place. Connect the fan's cable to the motherboard. Place the air duct back over the cooling fan assembly. Rotate the side access panel downward over the computer's opening. Press down on the side access panel until it snaps into place. Place the computer vertically, and then reconnect all cables and devices to the computer.
Sounds like you are overheating. One way to tell if it's overheating is you say it will run for about 30 minutes then shuts down. When it shuts down try rebooting to see if the boots successfully. If it fails to boot successfully right after it shut down then you are probably overheating. If you wait awhile to let it cool down for 30 minutes or so and if you reboot and it does it successfully you definitely have a overheating problem. If I remember correctly all those compaq sr series have loud and fast running fans. Computers overheat because of three reasons for the most part: 1) A fan has stopped working. 2) The Thermal Paste on the CPU and Heat Sink has dried up or is not thick enough to keep the unit cool. 3) Dust has clogged the fan vents and inside the computer. Fortunately for you desktops don't have to be completely disassembled like laptops to get to the fan, CPU and heatsink. Just pop the case and you'll see the components attached to the motherboard
It could be a Power Supply issue or Hot chip condition on the motherboard due to lack of Air Flow for cooling or a problem with the motherboard. The first things I would check for are a Virus and Air Flow. There are a couple of Viruses out there that will do this. Get a can of compressed air and open the case and clear all the air channels and blow the dust out of it. With the case open turn the computer on and make sure the Cooling fan on the CPU works and the fan in the Power supply is working. If the CPU fan is not working replace it. Same with the the power supply fan, you would have to replace the complete power supply if that one is faulty. If your Video card has a fan on it make sure that is working as well. You maybe able to replace that fan if it's not but you may have to replace the video card if it isn't working. That would present you with a situation that the Video shuts down but the rest of the computer stays running. You will also want to check your power saver options and make sure you don't have them set to shut the computer down on time. I use screen savers and Hibernate settings to protect the screen from burn in but rarely actually shut down my computers.
You might have a cooling problem due to a fan malfunction. It is not clear whether it's the power supply fan or the CPU fan; in the latter case you might also have a thermal coupling problem. The symptoms you describe certainly seem to point to such.
My advice would be to replace the fan (or the whole power supply; you might also want to purchase a "Silent Power" unit for quieter computing). If it's the CPU fan and you are comfortable with, or know anyone comfortable with a bit of PC servicing, you might want to also unmount the heat sink from the CPU and replace the thermal paste between CPU and heatsink. Clean the heat dissipator (the black metal grille over the heatsink) with hot water and a bit of soap and dry thoroughly, or wipe it energically with a dust brush, before mounting the new fan on it.
First thing i would check would be the CPU fan. you will have to remove the side access panel on the case to check this.
If the CPU cooling fan is covered in dust, and the spaces between the cooling fins on the heatsink (right underneath the CPU fan) are clogged with dust. it would cause this problem. there is also a fan at the back of the computer inside the power supply that can get clogged with dust, and may possibly overheating and shutting off. if you look in the back of your computer and find where the power cord plugs in, the power supply cooling fan is right around there as well.
If there is a good buildup of dust, it would be best to have your computer professionally cleaned. Using a vaccum cleaner is not a good idea unless you are familiar with procedures of working with static sensitive components.
Which fan are you referring to? As far as I know the fan in the power supply runs at the same speed at all times. So if that is the fan you are hearing it may indicate that the power supply is failing. The power supply may be over heating and shutting down. I would try a different power supply if you can get your hands on one.
Any fan that is making noise you would need to replace. There is also never a need to use alcohol to clean a fan. Some computer air or a light wipe down will do just fine. If you have any other questions let me know. Thanks, Lee
I have the same model after youlet it sit for a long enough period to cool down it will come back on and work normal, it is a cooling problem called gateway and they confirmed this theproblem I ran in to was what fan this computer has 3. temp fix I used was to remove the tower cover to allow better air flow try this till you can figure out what fan is messing up
I HAD THIS PROBLEM WITH MY PC AS WELL..... I HAVE THE SAME ONE. WHEN YOU USE HIGH CPU APPLICATIONS, YOUR FAN ACCUMULATES LOTS OF DUST IN IT, WHEN THE FAN GETS BLOCKED UP, YOUR PROCESSER DOESNT COOL DOWN, TRY TAKING THE FAN OUT AND THE METAL PART, AND CLEANING IT OUT, BUT DONT TAKE OFF THE WHITE PASTE... JUST TAKE OFF THE DUST FROM THE FAN, THAT SHOULD COOL DOWN YOUR PC AND IT SHOULD STOP RUNNING AT HIGH RPM'S.. FYI... THE FAN IS ALWAYS RUNNING