DIAGNOSE
Step 1
Plug your computer into an electrical outlet and turn it
on. If electrical connections work and you can hear and see the CPU fan running
but the computer will not boot, remove and reseat your processor to make sure
its connections are tight. Although you should refer to your user manual for
specific directions, most often this involves unclipping and removing the fan,
and then unlatching and removing the processor.
Step 2
Inspect the CPU fan to make sure it is running and if
necessary replace the fan. Fan failure causes your CPU to overheat and your
computer to randomly power down, and can result in permanent processor damage.
If the fan is bad and replacing it does not solve the problem, your processor
most likely has incurred permanent damage.
Step 3
Plug your computer into an electrical outlet and turn it
on. Look for the BIOS manufacturer name such as Award, AMI or Phoenix on your
monitor as the computer starts up and then listen for and record the number and
sequence of beeps that occur as your computer goes through a power-on self-test,
also called a POST test. The number and sequence of beeps that indicate CPU
damage depends on your BIOS manufacturer, so refer to documentation that comes
with your computer or contact a computer repair shop to determine whether the
POST is signaling CPU damage.
REPLACE
Step 1
Unplug the processor fan.
Step 2
Locate and unlatch the clips securing the processor fan and
underlying heatsink.
Step 3
Release the locking lever securing the processor often
appearing as a horizontal arm running the length of the processor by lifting it
upward.
Step 4
Grasp the processor by its sides using your thumb and index
finger, and then remove it by lifting it straight up.
Step 5
Set the new processor in place using gentle pressure to
secure it and then return the locking lever to its horizontal, locked position.
Step 6
Squirt a small amount of thermal compound about the size of
a dried pea in the middle of the new processor.
Step 7
Set the heatsink/fan combination in place and relatch the
locking clips.
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