Boot, display a blank screen and turn off the display to open
Users questions: Sometimes my computer monitor will turn black, you need to open the monitor off and on, and sometimes even open and close four or five times, what is the problem?
Experts answer: The display is connected to another host on the use, if the fault disappears, the fault may be the graphics card. If the problem persists, there may be significant The monitor's own fault or the fault monitor cable wire interface. Focus on examination of the interface metal pin monitor cable is broken or bent, if not, simply to change the display of a new cable and try again. 1, power line or data line problem. 2, the display tube of the problem (recommended repair). 3 Graphics card or graphics driver problem (for a try or upgrade the graphics card driver to try.) The BIOS battery discharge (recovery BIOS factory default) recommended plug about graphics cards, memory, and clear up health and polished graphics, memory cheat. Computer starts without display troubleshooting method (see a Capacitance did not play drums). Step 1: First check the computer's external wiring is connected to each connection re-inserted again to see if the fault is ruled out. Step 2: If the problem persists, then open the main chassis and see whether the excess metal chassis, or deformation caused by short circuit board, chassis, and whether the charred smell The paste flavor, without the burnt chip on the motherboard, CPU, etc. around the capacitor is not damaged. Step 3: If not, then clean up the dust on the motherboard, then check whether the computer normally. Step 4: If the problem persists, then unplug the Reset line on the motherboard and other switches, light connection, and then Short-circuit switch with a screwdriver to see if can boot. Step 5: If you can not boot, then use the minimum system method, the hard drive, floppy drive, unplug the drive's data, then check whether the computer can boot startup screen appears if the computer monitor, the problem in these devices. Then, one by one to more than a few A device access to the computer, when access to a particular device, the failure to reproduce, indicating that the failure was caused by this device, and finally focus on examination of the device. Step 6: If the problem persists, then the fault may be caused by memory, graphics card, CPU, motherboard and other equipment caused. Then use the plug method, exchange and other methods were examined Memory, graphics, CPU and other equipment is normal, if there is damage to the equipment, replacement of damaged equipment. Step 7: If the memory, graphics card, CPU and other equipment properly, then the BIOS discharge, the use of isolation, the board placed in the box outside, connected to memory, graphics, CPU and other tests, such as If the computer can display, and then install the motherboard to the chassis and then testing, until you find the problem. If the fault is still the need to return the motherboard manufacturer repair. Step 8: computer boots but no display alarm, when the computer boot, the system BIOS to start POST (Power On Self Test), when the inspection The computer detected a fatal error when a device would control the speaker sound reporting errors. Therefore, there may be no display power failure alarm. For the computer starts without showing fault alarm sound according to the meaning of BIOS alarm, failure to check equipment to troubleshooting. Regular board See fault diagnosis method: computer motherboard structure is complicated, relatively high failure rate, fault distribution are more dispersed. According to the fault generation source, the motherboard power failure, failure can be classified, bus faults, failures and other components. The main reason causing the motherboard failure include the following. 1, components reasons: the chip on the motherboard and other Poor quality components, resulting in damage to the motherboard of aging, which leads to motherboard failure. 2, human reason: the use of computer, hardware or indiscriminate use of free hot metal to touch a variety of joints causing board failure. 3, dust, electrostatic reasons: due to dust or static electricity caused the motherboard is bad, short or burned primary Chip board, which led to the motherboard failure. Bad reasons: due to rust, oxidation, less flexible, pin sealing off, break the motherboard in a variety of other causes, chip, socket, interface is bad, which led to the motherboard failure. The characteristics and fault for the cause of the motherboard, when the board fails, the motherboard fault diagnosis Off as follows. Step 1: First, check carefully view all the motherboard slots, fans, chips, etc. There is no signs of damage: whether the motherboard burned, blown, foaming, the board broken, corroded socket, where exploding capacitors : BIOS battery has power. If there is apparent damage to the local dimension to the targeted Repair. Step 2: If the motherboard is no obvious signs of damage, then clean with a soft brush the dust board, clean up after the examination board is normal. If normal, it is the dust caused by the failure. Step 3: If, after cleaning up the dust, or not normal, then the motherboard with a multimeter to measure whether it is all the supply voltage