Common problem solving method of Notebook

In the use of notebooks, in the face of a variety of failures, if you do not know the reason, even the proficient computer experts will be overwhelmed, headache. Here are some of the most frequently encountered notebook failures, and provide a detailed solution to help readers calmly solve the problem

1, the notebook computer fan intermittent start reason

Without running any program, the system fan will rotate intermittently for about 5 seconds, then stop for 10 seconds, then go for 5 seconds and cycle. In fact, this phenomenon is normal, because the notebook computer in order to save power consumption, its cooling fan is not always working, but when the internal temperature of the laptop to reach a certain level, it will start cooling, so it also caused the time to stop the phenomenon.

2. Why does the notebook computer start slowly

My notebook recently appeared very Strange fault, performance: After booting the hard drive lights flashing, 5-6 minutes to enter the system, after entering the system unresponsive system, the view process is known as system (not system idelprocess) process consumes resources 99% resources, size is 268kb~ 272kb,cpu fan on (this machine for temperature control fan, usually hit CS half an hour to start), after about 15 minutes to return to the resources system idelprocess, the system returned to normal. The latest version of Jinshan Poison bully can not find poison, no other suspicious process, Skynet surveillance is not suspicious connection. Is my machine a virus or a Trojan? or a system failure? According to what you said, it should be a system failure, most likely there is an unknown virus program in the impact of your system. The best solution is to back up the important data, then format the partition of the system and reinstall the operating system, so that your computer will be back to normal. In addition, the general laptop random will bring the system recovery disk, but using the recovery disk will restore the system to the factory state, may result in data loss, so please use caution.

3, the thermal problem of notebook computer

In the computer, the CPU is a big heat, the faster the CPU, the greater the power consumption, the more calorific. Generally used in the heat dissipation method mainly depends on the heat sink and fan. The bottom and upper part of the motherboard, each with a metal radiator plate. In the position of the CPU, there is a system that assists in cooling, absorbing the heat generated from the CPU. The cooling fan has a non-starter, low airflow and high airflow of three gears, depending on the CPU temperature. The biggest benefit of this cooling method is the low cost, which is accepted by most PC manufacturers.

In addition to this commonly used heat dissipation method, the keyboard convection cooling is also a very creative method. We know that the notebook is very thin, when the keyboard installed on the motherboard, the bottom of the keyboard and the main board contact, just can use the bottom of the keyboard to the CPU generated by the heat conduction out. In the structure of the keyboard, each button has 4 holes, the heat is discharged through the key hole, when the hot air from the key hole discharged, cold air flow from the key hole to replace the hot air.

In many of the heat dissipation technology, the water-cooled bulk heat pipe technology is a very effective heat dissipation technology proposed by IBM. The original idea was to scoop the ice-cream spoon, the heat of the hand through the empty tube to guide the frozen ice cream, the more soft melts can be dug out to eat. The heat pipe has fiber and liquid heat conduction medium (mostly water), in the tube vacuum, a section close to the CPU, the other end away from the CPU. Its working principle is: in the vacuum state, the liquid thermal conductivity medium boiling point is very low, if the tube is heated, the medium will evaporate, the tropics to the other end, cooling and then flow back, so repeated, the heat is constantly taken away. The advantages of heat pipes are many, there is no moving parts, there is no noise, no energy consumption, and can work for a long time and effectively.

In addition to IBM's loose heat pipe technology, there are more features of Toshiba notebook computer cold, hot plate cooling technology. The dispersion efficiency is raised about 6.5 times times, so that the thermal problem of notebook computer is effectively solved. At present, many brand-name notebook computers have adopted heat pipe cooling, keyboard convection cooling, temperature-controlled fan three cooling mode.

There is no software to directly control the operation of the laptop fan, but the HTL instruction can effectively reduce the CPU heat. WINDOWS2000/XP has built-in support for the HTL directive.

4, notebook optical drive failure

Notebook optical drive The most common fault is a mechanical fault, followed by the circuit fault, and the fault of the circuit caused by the user adjustment is much more than the failure of the component damage, so in the dismantling or maintenance of the optical drive equipment, do not arbitrarily adjust the internal various potentiometers in the notebook optical drive. There are three kinds of common faults in Notebook optical drive: Operation fault, contingency fault and inevitability fault.

1) operation failure, such as driver error or improper installation, can not find the notebook drive in Windows or DOS, the notebook optical drive cable or jumper error makes the notebook optical drive not use; CD cable is not connected to listen to the CD, the notebook optical drive is not properly placed on the disk drive is not read disk, disc deformation or dirt caused by the picture is not clear or pause or mosaic phenomenon is serious, improper disassembly caused by the optical drive inside the various lines broken or loose caused by fault and so on.

2) Accidental failure of the notebook optical drive random failure, such as in-machine integrated circuits, capacitors, resistors, transistors and other components of early failure or sudden damage, or some of the frequent movement of mechanical parts suddenly damaged, such failures are rare, but must be repaired and replaced to be trouble-shooting, so contingency is called "true Fault

3) Inevitable failure of the notebook optical drive in the use of a period of time will inevitably occur after the failure, mainly: laser diode aging, read disk Time is longer or even can not read the disc; the optical lens in the laser head assembly is dirty or poor in performance, resulting in audio or video distortion or crash; mechanical drive mechanism caused by wear, deformation, loose. It is necessary to explain that the maintenance rate of the inevitability failure depends not only on the quality of the product, but also on the user's human operation and maintenance and use frequency and environment.

5. Other faults

1) No power-on (no lights on)

A. Check if the external adapter is properly connected to the notebook and the external adapter is working

B. If battery is the only power source, check whether the battery model is the original battery, the battery is fully charged, the battery is installed correctly

C. Check if the DC board is normal

D. Check and repair the motherboard

2) The power LED is on but the system is not running and the LCD is not displayed

A. Press and hold the power switch for four seconds to turn off the power, and then reboot to check if it starts properly

b External CRT monitor is displayed normally

C. Check that the memory is plugged in securely

D. Clearing CMOS information

E. Try replacing memory, CPU, charging board

F. Maintenance of the motherboard

3) The displayed image is not clear

A. Check whether the display brightness is normal after adjusting

B. Check that the display driver is installed correctly, and that the resolution is suitable for the current LCD size and model

C. Check that the LCD connection is correct with the motherboard; Check that the LCD connection is correctly connected to the LCD

D. Check whether the backlight control Panel is working properly

E. Check the motherboard for the presence of cold welding and false welding on the North bridge chip

F. Try to replace the motherboard

4) No display

A. Check if the system is in hibernation with the status indicator, and if it is in hibernation, wake the power on key

B. Check that the external monitor is connected is OK

C. Check if power is added

D. Check that both ends of the LCD connection are normal

E. Replace the backlight Control Panel or LCD

F. Replace the motherboard

5) Battery level is not recognized properly in Win98/win me

A. Confirm that the power management function is up and set correctly in the operating system

B. Charge the battery for three hours before use

C. Charge the battery two times in Windows 98 or Windows Me

D. Replace the battery

6) Touchpad does not work

A. Check for external mouse access and detect if it is normal with the mouse test program

B. Check that the trackpad connection is connected correctly

D. Replace the Touchpad

E. Check the keyboard control chip for cold welding and false welding phenomenon

F. Replace the motherboard

7) Serial device does not work

A. Check whether the serial port is set to "ENABLED" in the BIOS setup

B. Use SIO test program to detect whether it is normal

C. Check if the serial device is connected correctly

D. If it is a serial mouse, check whether the built-in trackpad is turned off in the BIOS setup, check whether the serial mouse is recognized in the Windows 98 or Me Device Manager, check the serial mouse driver installation is correct

E. Replace the serial device

F. Check for cold soldering and false soldering on the South Bridge chip on the motherboard

G. Replace the motherboard

8) The same port equipment does not work

A. Check that the port is set to "ENABLED" in the BIOS setup

B. Use the PIO test program to detect if it is normal

C. Check that all connections are correct

D. Check if the external device is powered on

E. Check that the printer mode settings are correct

F. Check for cold soldering and false soldering on the South Bridge chip on the motherboard

G. Replace the motherboard

9) USB port does not work

A. Check that the USB port is set to "ENABLED" in the BIOS setup

B. Reseat the USB device to check if the connection is healthy

C. Check the USB port driver and USB device driver installation is correct

D. Replace the USB device or contact the USB device manufacturer for technical support

E. Replacing the motherboard

10) sound card is not working properly

A. Use the audio detection program to detect if it is normal

B. Check that the volume adjustment is correct

C. Check if the sound source (CD, tape, etc.) is normal

E. Check if the sound card driver is installed

F. Check the speaker and microphone connection is normal

G. Replace the sound board

H. Replace the motherboard

11) Fan Issues

A. Use the Fan test program to check if it is normal

B. is the fan line plugged in?

C. Fan is good

D. m/b part of the connecter is welded

E. Motherboard issues

12) Keyboard Issues

A. Test the judgment with the keyboard test program

B. is the keyboard cable plugged in?

C. m/b part of the Connecter whether there is needle crooked or other undesirable

D. Bad Motherboard

Classification of software failures

13) Driver Class

A. Not displaying properly

B. Sound card does not work

C. Modem,lan not working

D. QSB cannot be used

E. Some hardware does not work properly because the driver is not loaded or the driver is not loaded correctly

14) Operating System class

A. Slow operating system speed

B. Sometimes crashes

C. Model does not support an operating system

D. Unable to shut down normally

E. Sleep Panic

15) Application Class

A. Application conflicts cause system panic

B. The application causes the system not to shut down properly

C. Application conflicts are causing the inability to use properly.

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