Common problems with laptops and some Solutions - liquid cooling, Power & LCD

Common laptop problems

Liquid on laptop

I have exposed many laptops to repair an accidental spillage of liquids. This is a recoverable condition in most cases. It 's very important (may be a corrosion or internal soakage) to respond to the reorganization as quickly as possible! Liquid intrusion, the following types of laptop damage:

short circuit caused by the wet nature of the liquid conductor (problem may clearLiquid dries)




short circuit caused by dried liquid residue




Corrosion occurs (particularly volatile with some acidic soft drinks - Coca-Cola)




The electronic components from damaging short circuit top

Possible Solution: Immediately when a spill occurs, turn off the computer, turn on the laptop and allow the device upside down (drainage) for at least 20-30 minutes. Then remove all cables connected,Remove the AC adapter and remove the battery and allows the device to dry overnight.

To remove all residual liquid: Get someone to remove the keyboard assembly and additional cleaning. It may help to use cotton swabs and distilled water to remove any contamination. In cases where the side effects can be corrosive suspicion (with coke) any suspect areas are gently massaged with a cotton swab dampened with CRC or WD-40. Dry the treated areas, leaving only a thin layer of WD-40 anti-corrosion solutionremains. While the keyboard is removed, use a bright light and magnifying glass to check the areas in which the contact fluid.

Laptop turns off randomly

This is often caused by:

Sensing an overload of the power supply current consumption




Processor due to overheating of the powder inside (clogged fan) building




AC power adapter capable of normal power needs (faulty power supply) will be




Overheat due to internal battery fault, or charging the




Intermittent short circuit or open connection (state of the power lines)

On older laptops is the most common cause of poor cooling. Try some 'air-conditioned place and see if that helps. Check areas near the internal fan to see if there is an accumulation of fiber dust. easy way to do this, the group, feel the flow of cooling air from the wall (s) - is theVery low air flow? If so, and the unit is at normal temperature, it can mean the internal cooling system is partially blocked.

Troubleshooting Laptop LCD Video Display

Here are some tips and tricks for troubleshooting and resolving problems portable video. Video applications are very common in laptops and with the following tips should detect and eliminate the basic problems of the video of the laptop.

Laptop LCDThe screen has a faint image is very dark

Look closely at the portable LCD screen and see if it has a much weaker. If it is possible that the handset is close lid position switch LCD is closed firmly. In this mode, the backlight remains off, even to open the lid of the LCD. This is to save power when the handset is closed with a lid. Check the LCD lid close switch. This is a small plastic near the back side LCD hinge pin. Try typingCover pass to see a couple of times you can activate the screen backlight. If this does not help, then I would suggest replacing FL inverter.

Laptop LCD screen is solid white color or mutilated

Connect an external monitor to your laptop. If the external monitor is OK, then you have a problem with the LCD display or laptop LCD cable connector. If the screen on the external display is the same on the laptop LCD, then it isprobably a bad onboard video will be integrated, this means replacing the motherboard of the notebook.

A typical liquid crystal display assembly of the laptop

This is a simplified explanation of the basic components that are involved on a laptop video display problem:

LCD connection: data sent the video screen from the motherboard to the LCD. A video cables supplying power to the FL inverter board on LCD panel

FL inverter PCB:This section provides the source of low voltage direct current to alternating current high voltage as required in order to attract the backlight lamp. If the FL inverter PCB is faulty, the LCD shows a very faint image on the screen of laptop

CCFL (backlight lamp): When the backlight bulb, you see the image on the LCD screen. On some laptops the backlight lamp, part of the LCD and must be replaced with a full-screen LCD assembly. It requires aLaptop workshop to replace the backlight lamp

Close the lid of the laptop: This switch is a small switch (mechanical or magnetic) that hinges located near the rear display. Most notebook computers are either inactive or working in the standby mode, the LCD is closed. D This is possible link with the laptop 'BIOS power management software. This in turn is connected to the Windows operating system


Laptop is slow andInternet pop-up is constantly shows

The handset is very likely infected with spyware. Spyware is software that hides on your computer and tried to collect information about your Internet activity. Spyware is often transferred to the computer during the download, the software "Unknown" free or other free music on the internet (Kazaa, LimeWire, BearShare, etc.) will result. The best way to prevent and remove spyware using Spybot. Please read my SpywareSoftware help page.

Laptop is frozen, no response to keyboard or mouse, can not stop

On most laptops I've seen this happen once in a while! The method is simple to solve this problem:

Unplug the power cord of the laptop




Remove the battery from the laptop




Wait a short (10 seconds)




Replace laptop battery units




Connect the power cable from the laptop




Turn on your notebook

The laptop starts normally and fully functional. If you are working on a Microsoft Word or Excel document at the time of the problem, then you may find that they have been for you automatically. In this case, you are automatically asked to see the last document you worked during the opening of the Microsoft program.

Troubleshooting> Laptop hibernation and standby issues

Power management options on laptops sometimes lead to problems. Hibernation and standby mode are power-saving mode of action for battery-powered portable computers.

Hibernation is a process by which saves the state of the working class (content) of your work on the hard drive before the computer in hibernation or standby. If the laptop is awakened, will be restored before the exact spot you were. Standby and hibernation with a Low Powerpattern of consumption, with enough power to preserve the contents of that statement. This means that laptops can wake up without a complete restart and loss of work.

Notebook does not wake up from standby or hibernation

Here are my suggestions have been tested:

Give it time - some older laptops can be up to 30 seconds to wake up - in full




Some notebooks have special keys or buttons for "Wake Up" - Read the manual




Hold down the power button on my laptop for five seconds or more. Some laptops are configured to suspend or hibernate by pressing the power button. Hold down the power button for 5 seconds + checking back and restart the notebook




last resort, remove the battery when the laptop and power cord, wait 30 seconds, replace the batteries and reconnect the power cord

Now that the handset is ready to do basic researchProblem. Typically, these problems are caused by a disagreement between the two functions of power management BIOS and Windows laptops.

A conflict with laptops BIOS power management and power management in Windows is the most common cause of these errors alarm. Try to see the various settings in the BIOS, which should solve the problem. See if the laptop BIOS is configured to reset the computer and how it compares with the value configured in Windows. In most cases, it canWindows power management control.

See Also : Toshiba Qosmio X505-Q860