Is the battery compartment on the back? Do you remove the keyboard from the case to find the compartment ?

As with any hardware on your laptop, the fan may stop working. Your laptop's fan serves as the dedicated cooling system for the CPU. If your CPU overheats it will cause severe damage to the motherboard. It may also cause electrical damage hardware devices nearby the CPU. Most HP laptops are designed with CPU fan located on the top side of the motherboard. There are a few HP laptops with the CPU fan located on the bottom side of the motherboard.

Shut down your laptop, and fold down the LCD screen. WARNING: Before you start troubleshooting remember that you are dealing with electricity that can KILL. http://www.kitchentablecomputers.com/static.php - rules Only work inside the computer case when the power has been switched off and disconnected. Never open the power source. Some of the below steps recommend removing physical parts within the computer. While in the computer it is highly recommend that you be aware of ESD and its potential hazards Disconnect the AC power cable and any external devices. Place the laptop face down, and rotate the computer so the front opening is facing forward. Locate the battery pack in the upper right or left corner of the laptop. The location depends on your laptop model. Press on the battery's release button, and then lift the battery out of its compartment. Place the laptop face up and open the LCD screen all the way. Insert a flat-head screwdriver into the right side of the keyboard cover. The keyboard cover is a thin strip of plastic situated between the keyboard and LCD. Gently pry the cover from the laptop, and set it aside. Remove the Phillips-head screws located above the top row of keyboard keys. These screws secure the keyboard in place. Grasp the top edge of the keyboard, and then place the keyboard face down over the palm rest area. Disconnect the keyboard's large ribbon cable from the motherboard. Remove the keyboard from the laptop. Locate the small circuit board near the top of the laptop's upper casing above the keyboard compartment. Disconnect the cables from the circuit board. Remove the Phillips-head screws securing the circuit board in place. Close the LCD screen. Place the laptop vertically. Position the laptop with the back of the LCD hinges facing upward. Remove the single Phillips-head screw from the back of each LCD hinge. Place the laptop face up, and open the LCD screen until it is in the 180-degree position. Locate the LCD video cable extending from the left side of the LCD panel. Disconnect the cable from the motherboard. Remove the Phillips-head screws from each LCD hinge. Lift the LCD screen panel off of the laptop. Set it aside. Locate the CD/DVD drive inside the right section of the laptop's upper casing. Remove the Phillips-head screws securing the drive in place. Grasp the face of the drive and slide it out of its compartment. Place the laptop face down. Remove all remaining Phillips-head screws from the bottom casing of the laptop. This includes any screws inside the battery compartment, and on the back panel of the laptop. Flip the laptop over, and remove the remaining Phillips-head screws from the laptop's top casing. Locate the touchpad cable situated just above the touchpad area. Disconnect the cable from the motherboard. Remove the top casing from the laptop's base. Locate the CPU fan in the upper left corner of the motherboard. Remove the Phillips-head screws securing the fan to the motherboard. Disconnect the fan's power cable from its connector on the motherboard. Lift the cooling fan out of the laptop and set it aside. http://www.youtube.com/watch?v=qcy0YSOmX4E How to Clean the Fans on HP DV4 - Overheating This might not be you laptop but it might give you some insight. Hope this helps.

You might have to remove the Palmrest and keyboard to tighten the screws on the hinges. Have some cups with labels on them so you will know where the screws came from. Turn the laptop over and remove the screws on the bottom. Remove the battery and remove any screws inside the battery case or compartment. Notice some screws might have the icon of a keyboard besides them, if so they hold the keyboard in place. Remove the covers for the hard drive, memory and any other devices then remove them and look for screws inside the case where they came from. Remove the dvd drive and look for screws in the dvd drive compartment that hold the palmrest to the frame.

Turn the laptop back over and remove the strip that is above the keyboard very carefully because there might be a cable under it. You will just have to pry it loose because it snaps in place. The lcd hinges might be exposed enough so that you can tighten them without removing the keyboard and palmrest.

Next remove the keyboard. The strip that was above the keyboard might have screws under it that hold the keyboard in place so remove the screws. Sometimes the keyboard has little catches that hold it on the sides, so just work with one side first by bending it a little to get past the catches. Once you get one side loose you can carefully lift the keyboard because there is a cable that is under it that attaches to the board that you want to remove from the board. Now the LCD Hinges might be exposed so you can tighten them.

Remove the power cord, remove the battery, turn the laptop over and remove any screws you see inside the battery compartment. Also look on the bottom and in the battery case for any keys that might have the icon of a keyboard beside them (they hold the keyboard in place). You might have to remove all the screws from the bottom case if the laptop's design does not have a separate strip that sits above the keyboard. Once you have the screws remove, turn the laptop over and open the lid. If there laptop has a strip above the keyboard, then pry it off gently because a cable might be under it. If it does not have a strip, but is all one big piece called the palmrest that surrounds the keyboard, then the keyboard might have little catches on the sides and at the top that you can move and wiggle the keyboard out. if not you will have to remove the palmrest. Also if you have the strip above the keyboard, once you remove it you might see screws that hold the keyboard then remove them.

Be careful when you lift the keyboard out, there is a cable under it that has to be removed from the board.

If you have idea about it ......but this link can help you ...in this.. check it.....http://www.irisvista.com/tech/laptops/toshiba-satellite-a135/remove-mainboard-1.htm
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Thanks
Sanjay Kumar

1) Remove ALL electrical sources.
AC adapter and Battery. Leave the Battery Compartment Door off.

2) Laptop closed turn it over, battery compartment facing Away from you.

3) Looking at the inside edge of the Battery Compartment that is towards you, there are 3 screws to remove.
They are right along the edge that faces you.
There is one in the middle, and one on the right side, that are down in a little indention. (A small drop in the case)
There is one to the left.
Philips head screws. Remove them, place them in a multi-compartment container, and mark the compartment for where they came from.

(DO NOT mix the screws up that you are going to remove)

4) Turn the laptop over, open it.
Carefully lift the Front of the Keyboard up to an angle. (The Front of the Keyboard faces the LCD screen)
DO NOT lift it straight up.

There are plastic tabs that protrude from the back of the Keyboard, and go into the Keyboard Cover.
(The dark rectangular shaped piece of plastic that surrounds the Keyboard, and ends at the Palm Rest, is the Keyboard Cover)

Ease the Keyboard forward towards the LCD screen. Lay it down next to the LCD screen, and on the Keyboard Cover.
You want to be able to access the Keyboard cable's connector.

The Keyboard cable connector is the white connector in the middle, with the ribbon cable leading from it to the Keyboard.
This is a ZIF connector.
Zero Insertion Force.

The ZIF connector is made of two parts. It opens, but does NOT separate into two parts.
The white tabs you see on either side are eased towards the LCD screen.
Use your fingernails.
Push on one 'ear' a little, then go to the other side. Keep alternating back, and forth until the ZIF connector is open. It only opens up about 1/4 inch.

This action opens the ZIF connector, where the flat ribbon cable can be eased out of it.

(To reinstall, line the ribbon cable up in the connector, Insert it until it stops, then squeeze the white 'ears' towards the front of the laptop. {Towards you)

Use EXTREME care when opening, and closing the ZIF connector. If you break it you have to replace the motherboard.

Remove the Keyboard.

Regards
joecoolvette

Download your manual from compaq support page and it will show you, its usually under your laptop, there are covers for memory and hard drive, 1 or 2 screws later and your in.

Some laptops memory is under the keyboard, usually you unclip a strip at the top of the keyboard and lift keyboard out

Me too, need to get inside to clean and remove dust and see why my video is gone after about 10 minutes of operation or so, good chance it is an overheating problem, but I cant get the case open.

The latch is incorporated into the palm rest which you can buy on Ebay for around 25 bucks.

The simplist way to do this is to remove all the bottom case panels to make sure there are no hidden screw holes. Remove the connectors on the wireless card, remove the battery and the three black screws inside the battery compartment. Remove the screw and the dvd drive. Remove all the screws from the bottom case. Turn the laptop back over and remove the power button cover, start prying the cover up on the right side, it will come off as long as you removed the three screws from the battery compartment. Once the cover is off, press on the small indentions around the edge of the keyboard, this will release the keyboard. Release the keyboard cable clipand remove the keyboard. Unplug all the cables from the motherboard and unplug all the flat cables from the palmrest to the motherboard. There are several screws holding the palmrest to the bottom case assembly. Remove these screws and note their location. Once the screws have been removed, start working the palmrest free from the bottom case half, if all screws have been removed will pop apart, lift it from the back and tilt it toward the front and lift the palmrest away.

You will have to take the palm rest off of the case. The battery, if I recall correctly, is attached to the under side of the palm rest. You MAY be able to get at it if you remove the main battery and look up into the case through the battery compartment.

BSOD's (Blue Screen of Death) on the 4600 series almost exclusively come from bad memory sockets (you have two), while the RTC issue (date/time) is un-related. Only in extreme rare cases have I seen both memory sockets go bad - so you can probably get around one bad socket by using only the "other" socket. The memory compartment is at the bottom, square big door covering it held in by 2 screws.

The RTC battery (CMOS battery) requires separation of the lower case, as it's located between the main battery and the palmrest. To get to it:
1. remove all bottom screws labelled B16 and B6 (including ones within the battery compartment);
2. remove the 2 screws in the back of the laptop;
3. remove the keyboard cover strip above the keyboard;
4. remove the 2 screws holding the keyboard, disconnect and remove keyboard;
5. remove the 3 (B16) long screws on the left half, and the 2 short screws behind the CD-ROM drive.
6. disconnect video cable, floppy cable, and mouse cables, and wireless antennas.
7. now you can separate the lower case from the upper case/screen assy. You'll see the RTC (cmos) battery - it should be dressed in green with two wires (red/blk) connecting it to the motherboard.

That's should be it. I'm citing all this by heart, so forgive me if I miss a screw here or there.... :-)