My laptop would power off after about 10 minutes, so I read that I should try to blow out any dust from heat sink area. Took laptop apart, and blew air inside, put back together and now screen is blank. It powers on, and seems to be booting up, but totally black screen. Hooked up to external monitor, which works. Any suggestions?
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To shut it off press and hold the power button for ~10 seconds. It sounds like your computer is overheating. if you have compressed air, blow out the fan vent, if you do not you can carefully try to blow out any caught dust.
1) Dust - Dust inside the laptop,
dust clogging the vents and fans, dust around the cpu and heatsink.
Remedy - take laptop apart and use a can of compressed air to blow out
2) A Fan not working - Listen and see if your fan is
working, Air should be pulled in through the vents. Remedy - take
laptop apart and replace the fan.
3) The Thermal Paste around the
CPU and Heatsink has either dried up or is too thin to keep the unit
cool. Remedy - Take the laptop apart and put a fresh coat of Thermal
Paste around the CPU and HeatSink.
You could purchase a Laptop
Cooling Pad that the laptop sits on and it plugs into the usb ports to
keep the laptop cool. Try Tiger Direct at:
the site comes up just type: Laptop Cooling Pad in the white search box
at the top and click GO. Sort the returned results by Price Low to
Below is a link to one that I use when someone can't afford
the expense or have the time to take the laptop apart. It costs $12.99
Sounds like your laptop might be overheating. Does it reboot successfully immediately after is shuts down after 5 minutes or does it have to sit awhile before it reboots successfully?
If you can't boot it right back up after it shuts down, then it is definitely running hot and will only boot back up successfully after it sits awhile to cool off.
Things that cause it to run hot: 1) Dust... Dust clogged in the vents, fans and around the cpu and heat sink. 2) A Fan is not working 3) The Thermal Paste around the CPU and Heat Sink has dried up or is too thin to keep the unit cool.
For the best results you'll have to take the laptop apart to remedy the situation especially if you need to get to the Fan, CPU or Heat Sink.
You can try a can of compressed air and blow out the vents and fan area, that might work for a while but you'll be blowing the dust in. It's best to take it apart and blow the dust out.
Your computer is overheating.
Turn it off.
Remove the battery.
Disconnect the AC adapter.
Buy a can of compressed-air.
Give your computer a "blow-job", to blow-out all the dust from inside the computer.
The dust is "insulating" your laptop, preventing it from cooling itself down.
It could be overheating (due to the failure of a fan inside the laptop) causing the computer to "self-protect" by shutting itself down.
Turn the computer off.
Disconnect the AC power.
Remove the battery.
Purchase a can of compressed air.
Use the air to give a "blow-job" into every air-port in the laptop -- a layer of dust will act as a layer of insulation, preventing the computer from radiating the build-up of heat.
When you turn the computer on, listen for the fan(s) to start running -- put the hairs on your arm near an "exhaust-port" on the PC, to feel if the fans are blowing air out of the laptop.
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.