STEP 8

Remove cooling fan assembly which includes the CPU fan and heat sink.
In my case the cooling module was clogged with dust and because of that the laptop was overheating and shutting down on its own.
After cleaing the cooling module with air compressor, the problem was fixed.

By the way, in a Portege A600/A605 laptop the CPU is soldered to the motherboard and cannot be removed and replaced.

STEP 9

Lift up the hard drive and disconnect the hard drive cable.

STEP 10

Now you can remove the hard drive.

As you see, it's a SATA hard drive.

STEP 11

Remove two screws securing the SC card reader.

STEP 12

Put the SC card reader aside and remove one screw securing the CD/DVD drive.

STEP 13

Remove two screws securing the DVD drive connector board on the back of the drive.

STEP 14

Disconnect and remove the CD/DVD drive.

STEP 15

In a Portege A600/A605 laptop the DC power jack is not soldered to the motherboard.
You can unplug the power jack and replace it with a new one without soldering.