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Does not boot, no beep, no display, fans running on high speed

From one moment to another the desktop computer does not boot, shows no display, fans running on high speed and harddisk light is on. (also the cd and dvd units are running for a short time).

Posted by haibaer on

  • haibaer
    haibaer Jun 02, 2012

    Motherboard Asus p4sd-la (yale). Computer HP Pavillon t730m.
    There are NO beeps. Problem persists.
    Already tried: clearing CMOS (BIOS reset), changing memory, disconnected all PCI cards and CD/DVD drives.

  • haibaer
    haibaer Jun 05, 2012

    Still no solution. Also tried with a different PSU. Breadboarded motherboard with minimum configuration.
    It really seems to be the CPU or the motherboard. CPU gets normal temperature, but this is a poor indicator to know which one of both is malfunctioning.

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Try blowing the dust out of the inside, around the vents, around the fans and by the cpu and heat sink.

Also remove the fan as it sits on the cpu and heat sink. Then remove the heat sink that sits on the cpu, then remove the cpu by releasing the latch on the side of the bay it sits in (remember how the cpu goes back into the bay). Now clean off the old dried up thermal paste on top of the cpu and on the heat sink that sits on the cpu. Put the cpu back into the bay and secure the latch. Apply a fresh coat of Thermal Paste to the CPU and Heat Sink. Put everything back together then reboot.

If the thermal paste has dried or is too thin to keep the unit cool it's like metal touching metal and shorts out the system so it can't boot.

Posted on Jun 03, 2012

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Anonymous

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SOURCE: CPU fan runs at high speed and won't boot

Change the setting in the BIOS menu. reboot your computer.. when you see the dell logo.. press F1 (or F2 if F1 doesn't work) button until you see the BIOS screen. Check for fan options and change it

Posted on Jun 20, 2009

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Anonymous

  • 2 Answers

SOURCE: Dell Optiplex GX280 -ABC LIGHTS LIT UP IN BACK USB-HIGH FAN SPEED

system halted my pc help

Posted on Feb 25, 2010

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