Note: The following methods are for reference only. If you cannot handle the problem, please contact the designated Gold Medal service center of Hp in a timely manner and the professional engineers of the service center will help you solve the problem. The laptop battery adapter only provides the pressure change function, without voltage regulation. If the voltage is unstable when a single external power adapter is powered, it may cause the power supply module of the motherboard to burn out. I. LCD screen: 1. LCD screen is a consumable and has a certain service life. So it is best to set the time in the control panel-power options-Disable the monitor item as short as possible. This allows you to automatically turn off the LCD screen without using your laptop to reduce unnecessary waste. 2. The display lighting of the LCD screen comes from the back lamp. After a period of time, the brightness of the back lamp will gradually decrease, which is the root cause of the yellow display. Long use of high load will also make the aging of liquid crystal particles and lead to bad Electric points. Therefore, if you make it too tired during use, it will inevitably accelerate the emergence of these aging phenomena. Therefore, do not make the LCD screen work for a long time in daily use, and adjust its display brightness as much as possible. 3. When the notebook is not used, you do not need to place heavy loads on the screen cover. Such actions can easily lead to distortion and deformation of the top cover, resulting in irreparable traces on the surface. You do not need to point your fingers or their objects to the LCD screen. Hard objects can easily cause irreparable bad points on the LCD screen. 4. Because spat has a certain degree of corrosion, you should try to avoid talking to the screen loudly, so as to avoid saliva splash to the screen surface to cause corrosion. 5. When there are stains on the surface of the LCD screen, try to avoid using alcohol. Special Non-alkaline LCD cleaner should be used, and a small amount of wet and soft LCD cleaning cloth should be used to clean the screen along one direction. 6. do not store your laptop in a humid place. A large temperature difference may cause "condensation" on the LCD screen. If the screen is powered on, the liquid crystal electrode may corrode, permanent damage. If the surface of the LCD screen is misty before it is turned on, wipe it with a soft cloth and place it for a while before powering on. If you accidentally enter the LCD screen with moisture, as long as the LCD screen is in a warm place, the moisture inside will gradually evaporate. 7. Try to prevent the LCD screen from being accelerated by a strong light, and place the laptop in a backlight or in a weak daylight. 2. Battery: 1. Activate the new battery. Note that the battery should have a certain amount of power when purchasing the new battery. At this point, you should first use no external power, the remaining power in the battery, until the shutdown, and then use the external power to charge. After going home, the battery should be fully charged after the battery is used up. It takes about 12-15 hours to charge the battery. Repeat this procedure three times to fully activate the battery activity. 2. Generally, a battery can charge and discharge several hundred times. Therefore, to prolong the battery life, you must minimize the number of battery times. If battery power is not often used, it is recommended that the user take off and properly place the remaining 50% of the battery after fully charging and discharging. Power supply by a single external power supply adapter. At the same time, it is especially necessary to avoid repeatedly plugging the power supply when the laptop is equipped with a battery. In this way, the battery is greatly damaged. Because each external power supply is equivalent to charging the battery once, the battery life is naturally reduced. (See note) 3. Be sure to use up the power before charging (power less than 1%), this is the best way to avoid the memory effect. There is no memory effect of lithium battery. Generally, lithium battery also has a memory effect, which is only a little smaller than MH-Mh. When you charge your laptop battery, try to avoid taking too long, generally within 12 hours. Iii. keyboard 1. The laptop keyboard may polish the keyboard CAP after long-term use. We recommend that you purchase an HP external USB keyboard to avoid such problems. 2. when cleaning up accumulated dust, you can use a small brush to clean the gap, or use a high-pressure air-jet tank that is generally used to clean the camera lens, blow out the dust, or use a palm-type vacuum to clear the dust and debris on the keyboard. Clean the surface, with a little detergent on the soft cloth, and gently wipe the keyboard surface when shutdown. If you need to remove the keyboard when encountering a particularly stubborn stain, please contact the professional HP gold medal service center to help you complete this kind of work. Do Not disassemble it without authorization. Iv. machine maintenance: 1. Do not shake the hard disk during work. Therefore, we should try to avoid moving the notebook during hard drive reading and writing, and do not start the work on bumpy road sections. 2. The structure of the optical drive for the notebook is relatively accurate. We recommend that you purchase genuine CDs with quality assurance. 3. It is best not to place a notebook on an object with poor heat dissipation. This makes it easy for the notebook to generate a large amount of heat and cannot be discharged in time. For a long time, this will greatly shorten the notebook's life and cause irreparable physical damage. 4. When the body accidentally enters the water, immediately stop removing the battery and remove the external power adapter. If a small amount of water enters the body, blow it with a hair dryer after removing the power. And promptly contact the nearest gold medal service center, with professional engineers in the service center to help you detect and handle the problem.