After the computer plug in the power, turn on the computer power supply machine, how do not have the reaction, the computer power supply fan also does not turn
First make sure your socket is a power to see an insurance is intact on the motherboard (the old version of the motherboard has this thing) lights on the motherboard is not bright congratulations to you if you want to change the new power (of course does not rule out the power line and the computer mainframe box power plug failure)
Step 1: Unplug the power plug to the chassis side, with a pencil whether the amount of electricity, may plug bad contact or power line fault.Step 2: all plugs in the case are loose.Step 3: open the box cover, find the boot button (a small button), there are two lines on the motherboard, find the line, and find the pins with pencil feet short (two feet, even a) to see whether the start.Step 4: if there are other computers, remove other computer power, change, try again.Finally, the repair.
If the fan does not turn, it proves to be a motherboard problem (usually a motherboard boot circuit or a short circuit). If the fan is turned on, proceed to the next check. Fourth: each board, memory, CPU, hard disk, CD-ROM drive and connection line, which has short circuit phenomenon. Test method: one insert boot test, insert a short answer board switch pin, if inserted into a certain parts or the connecting line can not open the machine (the power supply fan does not turn) is the parts or connection problems, replaced or repaired can be loaded again.
The power supply problem, test method: open the box all the power plug is pulled out, the power of public power, with a paper clip or wire bent into a U shape, it will be inserted into the motherboard of the plug on the green line (20 pin fourteenth pin, 24 pin sixteenth pin) and black line a short circuit, if the power supply fan does not turn is the problem of power supply, a power supply. If the fan is turned, proceed to the next check. Third: motherboard problem, test method will be plugged into the motherboard, memory card, CPU, connection lines all out, only to the motherboard is connected with the power supply, the power supply to the power switch, two needle short answer on the motherboard,
First you have to ensure that the electric power input. On the premise of Rui machine can not open it there are four reasons: first, the chassis switch problem, it is easy to test, open the case, the chassis switch connection line is pulled out, and then use the screwdriver short answer board connected to the chassis switch two needle. If the power supply fan to prove case switch problem, if you do not turn to the next inspection;
