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My central AC unit decided to stop on the hottest day of the year. It would start and run normally for a few minutes and then the blower would shut off. After checking the breakers, thermostat and overflow shut off (did not have one) I saw something about a blower motor capacitor. This was easy to get to and replace and my last hope before waiting for someone to come fix it. The capacitor cost $4.04 with tax and had my AC working again. Needless to say I was beyond happy. I hope this can help others with a similar problem.
may be a few things try checking the a/c lines when it does the shut off thing are they freezing up? may need a dryer. is the fan coming on at the radiator when the a/c comes on? it needs this to keep the head pressure down. does it drip water when the a/c is on under the car? may another sign its freezing up.
holding the fn key on boot will start the pre boot diagnostics if theyre clean then the heatsink and fan need cleaned out as they get blocked with dust, there should be a panel that you can remove on the back
Make sure the cooling fan for the laptop is not obstructed in any way or is not dirty. It's pretty common for a laptop to get plugged with dirt from normal use. Get a can of air and blow the machine out to remove dirt, lint or debris.
You could also have a defective battery, but try cleaning the machine first.
How about this step, try to turn off the laptop itself. Remove the cables and battery just like what you did before, then press and hold the power button for 10 seconds. Then, reinsert the cables and battery on the laptop and then turn on the computer itself. If the laptop restarts, shuts down or freezes with the AC power cables, two things that you should seriously consider. It might be the power cable itself, AC cable port or the circuitry going to the motherboard. And since you have cleaned out the fan and heat sink, you have isolated that problem. Have you plug-in another power cable on your laptop? If yes, then check if it works. Otherwise, the main issue is that the AC port is loose or the circuitry of AC adapter going to the motherboard is not not working. You can re-open the unit and check the circuitry from the AC port going to the motherboard. You may check the circuitry from AC port to the power supply if it is ok. If symptom persist, please contact your local dealer...
Have you tried using a cooling pad under the laptop? You can pick them up at any electronics or computer store in your area. If it still overheats after that I would HIGHLY recommend you get in touch with acer and have them make sure that the laptop is ok.
if it overheats too much you will run into problems.
First, make sure that you put your laptop on some hard surface. If you put in on your bed for example, the soft surface will block the air vent on the bottom of the laptop, resulting in poor cooling of the inner components.
Do you hear the fan working, and air blown out of the exit vent on the side (or rear) of the laptop?
If not, then perhaps the fan is broken and needs replacement.
If the fan can be easily heard, working at full speed all the time, there is a problem with blocking the air inlet, or the internal radiator/heatsink got covered with dust and lint, and needs cleaning - try compressed air blown from the opposite direction (from the air outlet) to blow away the dust - of course with the computer switched off, otherwise you'll be "fighting" the fan trying to blow in opposite direction. If this doesn't help, the laptop needs servicing, as it probably lost the heat-conductive layer between the processor and heatsink.
You have an option here to check what the problem is....first I would like you to get a can of compressed air from an office supply store that is used for blowing the dust out of electronics. Blow the dust and dirt out of the vents on the side, bottom and rear of the laptop. I then would like you to run the laptop on the AC adapter only to see if the ac adapter is the problem. So take the battery out and run the laptop just on the AC adapter. If it shuts down, put the battery in and remove the AC adapter....if the machine continues to operate, the problem is AC adapter. It is most likely failing after a period of time causing an unstable power source and sgutting the laptop down....or if it fails on just battery too, then I would take off the panel access door to the processor and heatsink, remove the screws to the heatsink and carefully remove it and check that there is a layer of "thermal grease" on the two processor chips. If not, get some thermal grease and apply a very small amount and spread it evenly on the chip surface. Replace the heatsink and try to power it up.
Most likely, your system is overheating. Make sure you have several inches of space all the way around your system (except of course underneath it) and that it's not in an enclosed space. The system will shut itself off to keep from breaking. Good luck!