Shanghai Hewlett-Packard Maintenance: 
 Website: www.hpxiu.cn 
 Tel :021 -54590189; 021-26967946 Mobile: 13127933591 QQ: 33722805 
 Maintenance Address: No. 861 Tian Yao Qiao Road, Building 2, North Building, Room 1504, Shanghai Stadium Line 4, exit 3, near Lingling Road. 

 HP notebook repair can be divided into two parts. 
 HP Notebook software failure (system debugging installation, kill the virus, password crack, driver download and install, VISTA change XP) 
 HP Notebook hardware failure 
 .1: HP notebook motherboard repair (no power, no boot, boot no display (blank screen), crash reboot, power off, the graphics card Huaping) 
 .2: HP laptop LCD screen repair, black and white, Huaping, broken screen, split screen, screen flash, screen scratches, there are vertical, a horizontal line, screen dark, dark screen, black screen 
 .3: HP laptop repair drive (HPDVD, HP CD, HPCOMBO) 
 .4: HP Laptop Keyboard Repair (string key, part of the key failures, some of the key off could not be installed or missing) 
 .5: HP notebook repair parts (high voltage board, battery, lamp, screen axis, screen lines, screen shell) 

 Graphics card failure, notebook graphics cards also have a variety of failures, there are several specific HP laptop repair our Beijing has already summarized all the following points: 

 1. Crash. Recurrence of such failures are generally more common in motherboards and graphics cards or motherboards and graphics cards are not compatible bad; graphics card is not compatible with other extensions can also cause crashes. 

 2. Screen abnormal noise or patterns. Such failure - as is the graphics card memory problems or poor contact with the motherboard cause. Finger position to be clean or replace the graphics card. 

 3. Boot no display. Such failures are generally due to poor contact with the motherboard or graphics slot motherboard causing problems. For some integrated graphics motherboard, main memory if the shared memory, you need to pay attention to the location of memory, usually in the first - a memory slot to be inserted in memory: Since the card causes boot failure no display after boot - will be issued as a long, two short beeps. 

 4. Show Huaping, blind to the handwriting. Such failure - as is the high-resolution monitor or video card does not support caused. 


 Laptop power supply such as voltage instability caused by prolonged use of the device aging, current shocks can cause a power failure, to analyze specific issues: 

 One can not use the adapter and battery power. In such failures, we are here to introduce the method in accordance with the principle of detection. In such fault detection process is as follows: 

 1, the detection of power supply or cpu cpu is normal, because some machines can also cause cpu power failure; 

 2, the detection of what part of the motherboard if the main power supply short circuit; 

 3, the detection system chip input power conditions, including the main power supply, etc.; detected a problem with the input circuit of the input circuit should be carefully monitored, especially the input circuit of the insurance and mos is the most easily damaged. 

 Second, use the adapter without power, but the use of battery power adapter power-normal or normal use, but without using battery power. Maintenance needs of both fault detection circuit of two protective isolation, this part of the insurance is the most easily damaged, then mos tube, there is the diode. Detection of the two first met in the isolation circuit fault insurance, mos tube, then the diode, so that we can basically find fault components.