Question about Computers & Internet
It sounds like your Operating System may not be working correctly. Something may be corrupt. If you have the discs that came with your computer, you will want to use those discs and have a computer tech (or someone that is familiar with repairing computers) do a system repair on your computer.
Posted on Apr 20, 2014
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Posted on Jan 02, 2017
A large percentage of the time, this issue is directly related to the laptop is overheating.
Specifically the Processor. When the Processor becomes too hot, (Goes past it's Thermal Limit), it turns off.
This is a Fail Safe feature that is built-in, to keep the Processor from burning up.
The reason the Processor is overheating;
1) The inside of the laptop is dirty.
The hardware components inside a laptop are cooled by air.
There is a small Cooling Fan which draws air into the Air Intake Duct.
Foreign material such as Dirt, Dust, Hair, Food Crumbs, Lint, and other objects collect on the Cooling Fan, and in the Air Intake Duct.
The Air Intake Duct leads to a Cooling Tube, which in turn leads to a Heatsink.
A typical Heatsink is composed of a flat metal plate, which has tall fins protruding from it.
Heat is absorbed by the flat plate, and into the tall fins. The fins absorb the heat, and radiate it out.
Air drawn in by the fan, flows through the spaces in-between the fins, and carries the heat away.
The Heatsink is attached to the Processor, and may also be attached to the GPU.
(Graphics Processing Unit)
Once the Air Intake Duct, Cooling Fan, Cooling Tube, and Heatsink are clogged with the 'Gunk' mentioned above, the cooling capacity of the cooling system drops tremendously.
Solution is to remove the AC adapter (Charger), and the Battery.
A can of compressed air for computers is used, and the Air Intake Duct, and Cooling Fan are cleaned out with the air.
(Be SURE it is the intake side, and not the exhaust side. If you blow air in the exhaust side, you will be pushing the gunk back in, not removing it.
Your Air Intake Duct is on the bottom of the laptop, in the circular grille shape)
Attach the plastic straw to the can of air's nozzle.
Hold the laptop up on it's Left side, and the back facing you, on a towel placed on a table, with one hand.
Use the other hand for the can of air, and bring the plastic straw about a finger length away, from the Air Intake grille opening.
Use Short Bursts of air, as you are real close to the Cooling Fan. If you use a long burst of air, you may spin the fan faster than it was designed for, and cause damage to the fan's bearings.
A Short Burst of air is squeezing the trigger in all the way, then letting go.
Start at one side of that round opening, and go across to the other side. Come down in rows as you proceed.
After you are satisfied that the Air Intake Duct, and Cooling Fan is clean, lay the laptop down in it's normal position.
Prop the Left side up with a book on it's side, for about 10 minutes.
This will allow any moisture that may have been caused by the can of compressed air, to dissipate.
Now remove the book, reinstall the Battery, and plug in the AC adapter.
This link shows you - Disassembly of a Toshiba Satellite L355, or L355D laptop.
It is not an invitation to disassembling your laptop, I just want to show you the hardware components, I've been referring to above.
(It's part of the Toshiba Satellite L300 series of laptops)
Step 1 shows you the Air Intake Duct grille, and the Cooling fan under the grille. The round opening on the upper right side.
You can left-click on the photo to enlarge it.
The page numbers are on the bottom of the page.
Page1::Page2::Page 3::Find another model
Click on Page 2
Step 9 shows the Keyboard removed, and the top of the Cooling Fan.
If the above solution doesn't cure your problem, the laptop may have to opened up to this state, and the fan blades, and surrounding shroud, cleaned out.
You may feel this is beyond your ability. In any case, I am showing you what the computer repair tech will be doing.
The repair tech will be using a small soft bristle brush to dislodge the heavy gunk, then a can of air is used.
Q-tips can be used in a pinch to substitute for the brush, then short bursts with a can of air are used.
Page 3, Steps 16, 19 and 20 give you a bottom view of the Cooling Fan, and the shroud that surrounds the fan.
Step 20 shows you the Cooling Fan, the Cooling Tube, and the Heatsink.
The curved copper colored tube is the Cooling Tube.
There are two Heatsinks used.
One is at the left side, that has two screws circled in Red. Has a V shaped piece of metal on top, and an upside down V shaped piece of metal on bottom.
This Heatsink is for the GPU.
To the right of this Heatsink is another Heatsink with two screws circled in Red.
This is the Processor heatsink.
The Processor is underneath this Heatsink.
2) The laptop's Air Intake Duct opening is blocked.
The Air Intake Duct opening is on the bottom of the laptop.
Laying the laptop on your lap can block this opening.
The cooling capacity of the cooling system drops, the Processor overheats, and turns off.
Laying the laptop on a bed, couch, or directly on a carpet floor, can have the same effect.
3) The cooling system for a laptop is very inefficient.
All of the hardware components of a laptop are crammed into a small box, and a small fan is used to keep them cool.
To help the cooling system you can use a laptop cooler pad.
The cooler pad has fans built in it's base. Most are powered by plugging into a USB port on the laptop.
Below are a few examples. (Not an advertisement for the manufacturers, or the website)
Posted on Mar 08, 2010
When the CPU in the computer or laptopoverheats then it will shut down (i.e. thermal overload) and won't boot upagain until it has cooled down. If this is the problem is not fixed then theCPU 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.
Posted on Feb 06, 2012
I had same problem with my Sattelite L300. Motherboard has a defect in one Proadlizer film capacitor exactly on the back of CPU, the original ref. is nec-tokin 0E907 (900uF/2.5V) or similar code. I've replaced it by 4 tantalum capacitores of 470uF/2.5V each and 2 capacitores of 220uF/2.5V, all in paralell mode in same old place of nec-tokin component.
Vote for me... :)
Posted on Mar 10, 2012
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