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Re: D300a shutdown
With the message you are getting on your screen,there are couple things
you need to do.First thing you need to do is make sure your cooling
fans are all working if they are your next step is to go out and get a
can of compressed air to clean the heat sink on the processor and any
other cooling fan that needs to be cleaned before doing this unplug
your computer to be on the safe side.If the heat sink looks clean you
may need to remount the heat sink using thermal paste.Remember after
cleaning your computer try to clean it often this is one thing that
most computer user's overlook.
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There are several reasons for Auto shutdown of the PC, it can shutdown due to CPU processor overheating, Hardware conflict, SMPS voltage supply issue. what ever may be the reason, if you have knowledge of assembling then you can try below steps
1. Open the cpu cabinet and remove the heatsink then clean it.
2. clean the CPU Fan (use some spray like WD40)
3. Remove the old heat sink paste from the processor and apply heatsink paste and refix all the hardware.
4. check the voltage supply of the SMPS (power supply unit)
otherwise you can call computer hardware engineer and get the problem fixed.
When the CPU overheats then it will shutdown (i.e. thermal overload) and won't boot up again until it has cooled down.If this is the problem is not fixed then the CPU will eventually fail. A faulty fan causes this problem or the fan and heat sink assembly are cloggedwith dust. Check the CPU fan to see if it spins freely, if not replace the fan.
If the fan and heat sink is clogged withdust the remove the dust and make sure the vents are clear and dust free. Use acan of compressed air to do this.
Could be. It's just getting TOO hot in there. Listen and see if you can hear the fan working. Vacuuming out the CPU and all openings, case fan, power supply fan (vent) - as much as you can will ALWAYS improve heat related problems. Obviously, if you can not hear or see the fan working, you will know where the problem lies. If it the power supply fan, you will need a new power supply. Good luck. :)
Computers may not be smarter than people, but if
they’re designed properly, they will shut themselves down before
overheating to the extent that they do themselves damage. If the smart
person keeps turning the computer back on and figures out a way to foil
the protection, the unit is probably doomed. Once a unit shuts down
for thermal event protection, it may refuse to power back up for a
fixed period of time, five or ten minutes, or it may begin to boot and
shut down immediately as soon as it boots to the point that it can
figure out that its too hot. The over-temperature protection is
generally a BIOS rather than an operating system function, so one sign
of an overheated unit is one that shuts itself down while you’re
using it and then refuses to boot as far as the operating system unless
you leave it alone for an hour or so to cool down. Unless you’ve been
working in a very unfriendly environment, high temperatures, direct
sunlight, etc, you should take even a single overheating shutdown as a
warning to back up your data at the first opportunity and to give the
cooling system a serious cleaning. Check the CPU fan if it is spinning and also the CPU itself put thermal paste. So that the heat from CPU will absorbed by the heat sink.
Usually this problem is caused by a thermal [overheating] condition. Best solution is to open the case and see if the cpu fan is working. If not replace with a new heatsink fan combo and make sure you use a quality thermal grease between the cpu & heatsink. Hope this helps & please rate this solution as fixya. Thanks.
Try changing the cmos battery on the motherboard.
OR your PC could be overheating,check your bios to see if the thermal shutdown temperature is set too low.(assuming you can get into the bios)
Recommend new thermal paste on cpu,ensure fan/s are working.