Is this 2 computers ?
Check to see if there are any keys
stuck/depressed.
If so, use a paperclip and fit it
underneath the key and gently pry the end that is stuck.
Make sure the laptop is off before
attempting this.
Observe where the boot process ends
and starts over.
In most cases, this will give an
indication where the problem occurs.
If the laptop reboots early on in
the process, for example when it is detecting the hard drive, chances are good
it is a hardware issue.
If the reboot occurs further along
in the process, like when it is loading operating system files, there may be an
issue with operating system software.
Test all power and data leads that
attach to your hard drive SATA
the leads from your (motherboard to
your hard drive) make sure they have a secure dust free connections and are not
faulty
Make sure all leads that are
attached to your drives dvd\cd have secure connections and are not faulty.
even something as small as faulty
fan lead can cause you problems
computers need all of the data and
power to travel through every working device and to have an end for a computer
to be able work properly.
Motherboard and a hard drive any
leads between them will fail before your motherboard or your hard drive check
all power and data leads make sure they are securely seated even the cd/dvd
drives need to have current go through make sure these devices are working
Check your computer ram modules for
secure dust free seating you might even remove the ram modules to check for
dirt on modules and in the module socket and cmos battery make sure it has
charge and they are dust free and securely seated some motherboards cmos
batteries are soldered in
If your computer runs long enough scroll
to bottom toolbar
(bottom of screen)
right click select task manager
applications you will see whats running
if you see anything you dont need running
select end now
and you might uninstall
that specific
program if you or computer does not
require it to run and
some unnecessary programs that could be
running your computer over its limits causing memory dumps
also under processes see what is ticking
over in the background you might have a virus again if you see something you
dont need to be and users you will see who
is using your computer
You might need to add more computer ram
if you're not sure if a module is right for your
system use the
Crucial
Memory Advisor tool for a list of guaranteed compatible modules.
first you will need to
select the manufacturer from a drop down list then select your product line
from a drop down list then select the model then click
find it will take you directly to compatible ram also you will have an option
to scan your system
You should always ask for a guarantee on the
compatibility of the ram before making any purchase
Might be getting hot
check you CPU make sure its securely
seated and has thermal grease
http://www.hardwaresecrets.com/article/Thermal-Compound-Roundup-February-2012/1490
Capacitors look like small metallic
canisters and they are found in many different computer components including
computer monitors, computer motherboards, video cards, power supplies and a
variety of other consumer products.
A bad capacitor can cause a variety of computer
problems, but if you can identify the faulty capacitor you may be able to
replace it and save your computer.
Capacitor
Capacitors, sometimes also called condensers, are
used to store energy in an electric field.
In the context of computing, capacitors are used to
block the direct current being circulated around the motherboard.
A typical capacitor should last up to 15 years, but
some computer manufacturers use substandard capacitors resulting in shorter
lifetimes.
Computer Problems
When a capacitor has gone bad on a computer you may
experience a large range of problems. The computer may have trouble booting up,
or it may shut down without notice after running for only a short period of
time.
The most common problems associated with faulty
capacitors are that they cause unexpected computer crashes and general
reliability issues ranging from read/write issues to distorted screen images.
Identifying a Bad Capacitor
To identify a bad capacitor you will need to open
your computer case and locate the capacitors on your motherboard.
A bad capacitor may exhibit swelling at the top or
the base of the capacitor or it may sit at an awkward angle with the
motherboard, so compare the various capacitors in your computer in terms of
size and placement.
Additionally, a bad capacitor may have a funny smell
or it may have a brownish residue leaking from the top or the base.
Prevention
Manufacturers claim that capacitors may go bad
because a computer is not receiving enough power from a power supply, because
of an overclocked processor or because a computer is operating in an
environment with too much heat or humidity.
However, some capacitors prematurely fail due to
faulty work on the part of the manufacturer.
If you have a bad capacitor be sure to do research as
to the lifespan of other products made by your manufacturer.
Identifying bad capacitors
http://www.youtube.com/watch?v=ngA4k32jLGc
Capacitor replacement
http://www.youtube.com/watch?v=s0Pn2tEjY04
How to check a capacitor
http://www.youtube.com/watch?v=U4tnHA0phcc
Replacing a leaking capacitor
http://www.youtube.com/watch?v=s0Pn2tEjY04