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RE HP Pavillion ZE4800 Laptop When I switch on I here the fan start, the lights come on then it appears to shut down and re attempt to start again This occurs over and over and the PC never boots fully. Any ideas?

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I have same notebook and similiar problem. Mine runs for 30 min then shuts off completely in like 20 seconds. I added a $10 usb powered laptop cooler pad and bingo, runs now for hours no problem. On all computers I know the cpu heat temperature has a threshold, if it goes too high it will shut off. I think my fan doesn't kick on fast enough to lower the temperature and cool the processor. On yours it may be a fan that doesn't work or is working at the wrong time and the circuit shuts off the system. Shouldn't be terribly expensive maybe $60 to repair from a good technician..good luck

Posted on Dec 26, 2009

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This happened to my to my HP Media center Edition PC. I'd have to unplug the power from the outlet, let it stop flashing and the power up again. It would run for a short time and then shut off with the annoying amber / blue flashing light.

I found it was a heat problem on mine - specifically, the CPU cooler. After shutting down and opening the PC, check to see 1) if the CPU fan is running smoothly and 2) if there is a lot of dust and dirt on the CPU cooling fan and heat sink (and rest of the case for that matter).

Gently clean / vacuum the insides of the case AND power supply as best you can. Carefully vac the fan blades and heat sink to clear the dirt and dust that prevents the heat from being blown away by the fans.

When complete, you might even want to take the PC outside and reverse the vacuum so that air can be blown into tight places in the case. A can og compressed air can do the job instead, too.

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Since you do not hear the fan anymore I would start by opening up the case and seeing if power is going to the fan and make sure any connectors for it have not come loose. If the connectors are still hooked up chances are the fan is shot and needs to be replaced.

If you are not familiar with working around electronics and parts under power I would highly suggest you have some one who is familiar with this do it.

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1 Answer

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Could very well be a heat problem. You may have an accumulation of dust and dirt inside your laptop case. Laptops don't have much room for air circulation and even a small amount of dust and dirt buildup can cause random shutdowns to keep the motherboard from overheating. Using some compressed air in a can, blow out all of the dust and see if that helps. You may need to take it to a computer repair shop to have them open up the case and give it a good cleaning. They will be able to wipe all the fan blades clean and help with other dust areas. I don't recommend you trying to open the laptop case by yourself because it can be extremely tricky and something might get broken. Hope this helps.

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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

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