Tutorial to repair Laptop Will not Turn On.
When a computer simply will not turn on, there are a variety of possible
reasons why, but it is best to check for the simplest explanations
first.
A computer cannot operate without electrical power, so
first consider if the battery was charged or not. Check the A/C adapter,
as well. Make sure the outlet it is plugged into works, and look it
over for any signs of physical wear and tear. Once it is connected to a
working outlet, check to see that the LED is on and that all connections
are firmly attached with no jiggling. Any aberrations here and you can
conclude that the problem is related to your power supply.
Disconnect
all peripherals from your system before attempting to boot your
notebook. It’s possible that a peripheral may be causing the problem,
and removing that item before startup will reveal it or, at the very
least, simplify the process of discovering the true problem.
If
your notebook beeps during startup and doesn’t turn on, the problem is
likely either a BIOS failure or a bad memory module. The beeps are not
random; they are a code put in by the manufacturer to tell a technician
what is wrong. You can check for a BIOS problem by looking for the beep
code for your computer online.
Checking the memory modules is
relatively easy. You can usually get to the memory easily through the
bottom of the notebook. Most notebooks have two memory slots. Remove one
memory module and try booting your notebook. If it boots up fine, you
know you have a bad memory module or memory slot. If not, follow the
same steps with the second module. You may need to install a new memory
module to get things back in working order. By alternately testing a
working module in each memory slot, you can narrow down the source of
your troubles.
If you can hear the fan and hard drive spinning
but see nothing on-screen, the problem may be that only your notebook’s
display has failed. Refer to “Display Problems” for troubleshooting
tips.
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