HP Classmate Notebook – Disassembling procedure

How to remove the battery – How to remove the case – How to remove the memory module -  

HP Classmate Notebook – Disassembling procedure

How to remove Bottom cover

Before removing the bottom cover, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer.
Remove the bottom cover:
1. Position the computer upside-down.

2. Remove the 8 rubber screw covers from atop the screws. The screw covers are different sizes based on location, so be sure to make note of each screw covers location for replacement.

3. Remove the 2 Phillips M2.5×8.0 screws and 6 Phillips M2.5×6.0 screws that secure the bottom cover to the computer.

4. Starting at the card reader slot, pry around the seams of the bottom cover to disengage it from the computer.

How to remove Memory module

To update BIOS:

1. Navigate to hp wed
2. Click Support & Drivers > click Drivers & Software.
3. In the Enter a product name/number box, type the computer model information, and then click Search.
4. Click the link for the computer model.
5. Select the operating system, and then click Next.
6. Under Step 2: Select a Download, click the BIOS link.
7. Click the link for the most recent BIOS.
8. Click the Download button, and then follow the on-screen instructions.
Before removing the memory module, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.

2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer.
4. Remove the bottom cover
5. Disconnect the battery cable from the system board.

Remove the memory module:

1. Spread the retaining tabs (1) on each side of the memory module slot to release the memory module. (The edge of the module opposite the slot rises away from the computer.)
2. Remove the memory module (2) by pulling the module away from the slot at an angle.

How to remove Keyboard

Before removing the keyboard, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer.
4. Remove the bottom cover
5. Disconnect the battery cable from the system board.

Remove the keyboard:

1. Position the computer upright and open as far as possible.
2. Using a small, thin tool, press the 4 latches (1) at the top of the keyboard upward to disengage the keyboard from the computer.

3. Lift the top of the keyboard upward (2), and place the keyboard on the palm rest.

4. Disconnect the keyboard cable from the system board.

5. The touchpad cable also connects to the system board under the keyboard. This connector is located on the bottom of the system board along with the keyboard connector. Disconnect the touchpad cable if you need remove the system board.

How to remove Battery

Before removing the battery, follow these steps:
1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system.
2. Disconnect all external devices connected to the computer.
3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet, and then unplugging the AC adapter from the computer.
4. Remove the bottom cover
Remove the battery:
1. Remove the 2 Phillips M2.0×6.0 screws (1) that secure the battery to the computer.
2. Lift the tape from atop the battery connector, and then disconnect the cable from the system board connector (2).
3. Remove the battery from the computer (3).

Apple iPhone battery replacement procedure – Apple iPhone 4s Battery replacement

Apple iPhone 4s  battery replacement procedure 

Before disassembling your iPhone, be sure it is powered off. Your iPhone 4 rear cover may have either two #000 Phillips screws or Apple's 5-Point "Pentalobe" screws (second image). Check which screws you have, and ensure you also have the correct screwdriver in order to remove them.
Remove the two 3.6 mm Pentalobe or Phillips #000 screws next to the dock connector. During reassembly, we recommend you replace the 5-point screws with equivalent Phillips screws. Our Liberation Kit provides the tools and screws needed to replace the Pentalobe screws with Phillips screws.
The 5-Point Screwdriver should only be used once, as it has the potential to strip the screws.

Push the rear panel toward the top edge of the iPhone. The panel will move about 2 mm.

Pinch the rear panel with your fingers and lift it away from the iPhone. Alternatively, use a Small Suction Cup . Be careful not to damage the plastic clips attached to the rear panel.

If you are installing a new rear panel, be sure to remove the plastic protective sticker from the inside of the camera lens and the sticker from the large black area near the lens.

Remove the single 2.5 mm Phillips screw securing the battery connector to the logic board. Some devices may have two screws, one of which holds down the contact pad which is located above the screw indicated in red in the photo.

Use a plastic opening tool to gently pry the battery connector up from its socket on the logic board. Pry from the top and bottom of the connector bracket there isn't as much of an overhang on the sides, and you may damage the connector.

Be very careful to only pry up on the battery connector and not the socket on the logic board. If you pry up on the logic board socket, you may break it entirely. Remove the metal clip covering the antenna connector.

Use the clear plastic pull tab to gently lift the battery out of the iPhone. Do not remove the plastic tab from the iPhone. You may need to use a plastic opening tool to loosen the adhesive under the battery. Remove the contact clip from the iPhone. Before reconnecting the battery connector, be sure the contact clip (shown in red) is properly positioned next to the battery connector. Before reassembly, be sure to clean all metal-to-metal contact points on the pressure contact as well as its contact point on the rear panel with a de-greaser such as windex. The oils on your fingers have the potential to cause wireless interference issues.

Apple iMac processor upgrading and – Apple mac mini Ram replacement procedure

Apple imac - Apple mac mini processor up-guarding procedure

Start by gathering your parts, tools, anti-static strap and gloves (gloves are for glass & LCD) Remove glass Then remove LCD. 

Core i7 2.93GHz Quad Core processor, Arctic Silver thermal compound,Processor is Intel Core i7 870 2.93GHz 8MB LGA 1156 Quad Core Processor 95W.

Remove HD, Superdrive and motherboard. 

To remove motherboard (a little tricky), I followed this excellent guide 

Not mentioned in the guide is that you have to remove the IR sitting in back of the front Apple logo before you can remove the motherboard

Flip over motherboard, gently remove 4 x Torx 8 heatsink screws on the bottom (not the big Phillips screws on the top). Please note : Warranty is void with this step.

Use Arctic Silver thermal compound remover and preparation solutions to get rid of factory compound.

Note arrow on CPU (bottom left in picture). New CPU must be installed in the same orientation.

Apply Arctic Silver thermal compound with finger covered in plastic. Spread evenly on CPU only. Guide is here - Applying Thermal Paste.

Apple Mac Mini RAM Replacement procedure

Remove Bottom Cover

Place your thumbs in the depressions cut into the bottom cover.

Rotate the bottom cover counter-clockwise until the white dot painted on the bottom cover is aligned with the ring inscribed on the outer case. You do not need to apply much downward pressure while turning.

Tilt the mini enough to allow the bottom cover to fall away from the outer case.

Remove the bottom cover and set it aside.

Replace RAM

Release the tabs on each side of the RAM chip by simultaneously pushing each tab away from the chip.
These tabs lock the chip in place and releasing them will cause the chip to "pop" up. After the RAM chip has popped up, pull it straight out of its socket. Repeat this process if a second RAM chip is installed.