Why laptop runs hot and turns off or freezes?

My laptop runs very hot and eventually turns off or freezes – this is one of the most common complaints I have been receiving from my customer for many years. Why it’s happening? Is there an easy fix for that?
Most likely this problem is heat related. Take a look at the following picture.


Any laptop has a cooling module which consists of heatsink and cooling fan. When laptop is working, the processor (CPU) heats up and because of that the heatsink is getting hot too. At some temperature level, the fan kicks in and cools down the heatsink.
The problem starts when the laptop cooling module collects too much dust inside. Usually dust collects between the fan and heatsink. Dust clogs the heatsink and kills normal airflow inside the cooling module. Eventually, the processor gets very hot and the laptop turns off unexpectedly or freezes. This problem can be fixed by cleaning the laptop cooling module.

Cleaning laptop cooling module.

Some laptops give you an easy access to the heatsink and fan. In laptops like that you can access the cooling module through the bottom cover.

In my example I had to remove the cooling module. Otherwise, I wouldn’t be able to remove the fan and access the heatsink. In some laptops you can remove the fan without separating the heatsink from the CPU.
After I removed the fan, I found a thick layer of dust inside the heatsink. Cleaning the heatsink should fix any heat related problems.

Apply thermal paste on the processor.

If thermal paste on the processor dried out, you should replace it with fresh thermal paste.

Remove old thermal paste from the processor and heatsink using alcohol swab.
WARNING: In some laptops the heatsink also covers the graphics chip. The part of the heatsink which covers the graphics chip might have thermal pad on it instead of regular thermal paste. Do not replace thermal pad with thermal paste! Do not apply thermal paste on the thermal pad! Just leave thermal pad alone and apply thermal paste only on the processor.
I usually use Shin-Etsu thermal paste which is relatively cheap and performs well.

After applying new thermal paste, install the heatsink and fan back into the laptop. Do not forget to connect the fan cable to the motherboard!

What if cooling module cannot be accessed easily?

In some laptops the cooling module is buried deep inside the case and cannot be easily accessed and removed. In order to remove the cooling module it’s necessary to disassemble the whole laptop but it’s only for experienced users.
In laptops like that you can use the following technique:

Buy a can of computer compressed air.
1. Blow air into the fan grill on the bottom of the laptop.
2. Blow air into the grill on the side of the laptop.
Switch direction a few times until all dust is gone. Most likely this quick cleaning will fix your laptop overheating problem.

                                                                            by    laptoprepair101

How to replace LCD screen and inverter in Compaq Presario v2000 laptop

 

In this guide I explain how to remove and replace LCD screen with inverter board in a Compaq Presario v2000 laptop. Also, you can use this guide for removing and replacing the keyboard.
Most likely this guide will work for some other Compaq Presario models. If it works for you please mention the model number in comments after this post.
In order to take apart the display panel and access LCD screen, it’s necessary to separate the display panel assembly from the laptop base.

Before you start, make sure the laptop turned off and battery removed.
STEP 1.
Remove two screws securing the memory and wireless card covers. Remove both covers.

STEP 2.
Remove two screws securing the keyboard cover in the battery compartment.
For the purpose of my guide it’s not necessary remove memory modules and wireless card, but it’s necessary to disconnect antenna cables from the wireless card.

STEP 3.
Disconnect both antenna cables from the wireless card.

STEP 4.
Using a piece of soft plastic (I’m using a guitar pick) lift up the right side of the keyboard cover.
Continue removing keyboard cover with your fingers.

STEP 5.
The keyboard cover has been removed.

STEP 6.
Remove four screws securing the keyboard.

STEP 7.
Carefully lift up the keyboard.

The keyboard connected to the motherboard.

STEP 8.
For the purpose of my guide it’s not necessary to disconnect the keyboard cable.
Simply turn the keyboard upside down and place it on the palmrest.
Here you can find a new keyboard for Compaq Presario v2000 laptop.

STEP 9.
Carefully pull the wireless card antenna cable though the opening in the top cover.

STEP 10.
Unplug the video cable connector from the motherboard.

STEP 11.
Remove four screws securing display hinges to the laptop base.

STEP 12.
Carefully separate display panel from the laptop base.

TAKING APART DISPLAY PANEL AND REMOVING LCD SCREEN WITH INVERTER.

STEP 13.
There are six screw covers on the screen bezel.

Remove screw covers with a sharp object and remove all six screws found under those covers.

STEP 14.
Start separating the screen bezel from the display cover with your fingers.
A piece of soft plastic (guitar pick in my case) will help you to separate the bezel.

STEP 15.
Continue separating screen bezel on the top of the display assembly.

STEP 16.
Now move to the bottom part of the display.

STEP 17.
Screen bezel has been removed.

STEP 18.
The inverter board mounted below the LCD screen.
By the way, the inverter board works as a power supply for the backlight lamp inside the LCD screen.
If the laptop screen suddenly went very dark or backlight started flickering, most likely this is inverter board failure. Try replacing the inverter board first.
If replacing the inverter board didn’t help, probably this is failed backlight lamp inside the screen.

Remove one screw securing the inverter board.
Unplug cables from both sides of the inverter.

STEP 19.
Now you can remove the inverter board and replace it with a new one if needed.

STEP 20.
Remove four screws securing display hinge covers.

STEP 21.
Remove both display hinge covers.

STEP 22.
Remove two screws securing display hinges to the back cover.

STEP 23.
Carefully remove the LCD screen assembly.

STEP 24.
On the back side of the screen you can access the video cable.
Disconnect the video cable and transfer it to the new LCD screen.

STEP 25.
Each display hinge securing to the LCD screen with two screws.
Remove screws and remove both hinges. Transfer them to the new LCD screen.
Compaq Presario v2000 hinges.

You can find a new LCD screen for your Compaq Presario v2000 laptop here.
Search for a new screen by the model number printed on the back of your screen. In my case the LCD screen model number: B140EW01.

                                                                                    by insidemylaptop

Taking apart Sony Vaio VPCF1 laptop. Replacing LCD screen.

In the following guide I’ll be taking apart a Sony Vaio VPCF1 laptop. I’m doing that in order to remove and replace damaged LCD screen. In this guide I’ll show how to remove laptop keyboard, media button board, speakers and of course LCD screen.
The full laptop model name is Sony Vaio VPC-F11KFX/B.
Also, there is another model number listed on the bottom: Model PCG-F1114L.

It’s possible my guide will work for some other Sony Vaio laptops. If it works for you, please mention the laptop model number in comments after this post.
Before you start make sure the laptop is turned off and battery removed.
STEP 1.
Remove six (yellow) screws securing the media button board cover.
Remove two (red) screws securing laptop keyboard.
Remove two (green) screws securing display hinges.

STEP 2.
Carefully lift up the media button board cover with a sharp object and continue removing with your fingers.

STEP 3.
Media button board cover removed.

STEP 4.
Carefully lift up one corner of the keyboard.

STEP 5.
Slide the keyboard towards the LCD screen and at the same time lift it up.

STEP 6.
Place the keyboard upside down on the keyboard. Be careful, the keyboard still connected to the motherboard.

STEP 7.
Now you can access keyboard cable connectors. You’ll find two cables connected to the motherboard.

STEP 8.
There is no lock securing the cable on the small connector. Simply pull the cable from the connector.

STEP 9.
The big connector has to be unlocked first.
Move the brown locking piece about 2 millimeters away from the white base.
The locking piece MUST stay attached to the connector base.

STEP 10.
On the following picture the connector is shown in the unlocked position.
Now you can pull the cable from the connector.

STEP 11.
Remove the keyboard.
If you need a new keyboard for your Sony Vaio VPC series laptop, you can find it here.

STEP 12.
Remove three screws securing the media button board.
Disconnect the media button board cable from the motherboard.

STEP 13.
In order to unlock the connector, you’ll have to lift up the right side of the locking tab so it opens up at a 90 degree angle.

STEP 14.
On the following picture the connect is shown in the unlocked position. Now you can pull the cable from the connector.

STEP 15.
When you remove the media button board you’ll have to disconnect one more cable.

STEP 16.
Remove three screws securing laptop speakers.
It’s not necessary to remove the speakers completely. Just turn them upside down so you can get access to the hinges.

STEP 17.
Disconnect display cables from the motherboard.
Disconnect wireless card antenna cables from the wireless card.

In order to disconnect the cable, grab the gold connector with you fingers and pull it up.

STEP 18.
Remove four screws securing display hinges to the laptop base.

STEP 19.
Now you can separate laptop display assembly from the base.

REMOVING AND REPLACING LCD SCREEN.

STEP 20.
There are four screw covers on the screen bezel.
You’ll have to remove all four covers and after that remove all four screws found under those covers.

You can remove screw covers with a sharp object.

STEP 21.
Start separating screen bezel from the display cover.

STEP 22.
Continue separating the screen bezel.

STEP 23.
The screen bezel removed from the display assembly.

STEP 24.
Remove four screws securing LCD screen brackets to the display hinges.
Disconnect LCD backlight cable from the right side of the inverter board.

STEP 25.
Place the LCD screen face down on the table and carefully lift up the display cover.
Now you can access the video cable.

STEP 26.
Disconnect the video cable connector from the LCD screen.

STEP 27.
Remove LCD screen.

STEP 28.
Finally, remove four screws securing the mounting bracket to the LCD screen.
Remove the second bracket on the other side of the screen.
Transfer both mounting brackets to the new screen.

You can search for a new replacement LCD screen using model number printed on the label.
In my Sony Vaio VPCF1 laptop I had the following screen installed: LP164WD1 (TL)(A1).
I found a new screen available here for about $100.


                                                                                                          by    http://www.insidemylaptop.com/