Computer can not open machine solution

Check to see if the host power is working

Does the power supply fan rotate? Hand to the main chassis of the back of the switch power supply outlet, feel the wind blowing out the normal power supply, no wind is a power failure; host power switch on the instant keyboard three lights (NumLock, CapsLock, scrolllock) whether shiny? Yes, The power supply is normal, the power supply light on the host panel, the hard drive light is on. Because the power supply is not normal or the motherboard is not powered on, the monitor does not receive a data signal and is clearly not displayed.

2. Check the monitor to see if the power is added

is the power switch on the monitor turned on? Is the monitor's power led lit? is the display's brightness potentiometer closed to the minimum? Is there a "hissing" sound on the back of the hand to the display screen?

3. Check the display card and monitor signal line contact is good

Can unplug the plug to check, D-shaped socket is bent, broken needle, there is a lot of dirt, this is a lot of users often encounter problems. In connection with the D-shaped socket, due to uneven force, or forget to tighten the socket fixing screws, so that the socket contact is bad, or due to improper installation method of the Ambassador D-shaped socket pin or bent, so that contact bad.

4. Open the chassis check to see if the card is properly installed and is in good contact with the motherboard slot

Does the display card or slot have too much dust to be used for too long, resulting in poor contact? Does the chip on the card display a burnt or cracked mark? When a black screen is caused by a display card, the computer post will have a short, four-length beep beep. Try another good video card.

5. Check to see if other cards are in good contact with the motherboard slots

Pay attention to check the hard drive data cable, power cord connection is correct? Replace other card slots and clean pins. This is a point that many people tend to overlook easily. In fact, because the sound card and other equipment installation is not correct, resulting in the system initialization difficult to complete, especially the hard disk data line, power line plug wrong, but also easy to cause the failure of the display.

6. Check the memory bar and the motherboard contact is good, the quality of the memory is perfect

Reseat the memory strips once, or replace the new memory strips. If there is a problem with the memory bar, the computer will start with a continuous tone "beep" sound.

7. Check the CPU and motherboard contact is good

Due to moving or other factors, so that the CPU and slot 1 socket or socket 7 socket bad contact. Use your hand to click the CPU or remove the CPU reinstall. As the CPU is the main engine of the heat, socket type 7 may cause the motherboard to bend, deformation, can be in the CPU socket motherboard Bottom cushion flat motherboard.

8. Check the motherboard bus frequency, system frequency, DIMM jumpers are correct

Control the motherboard manual, check each jumper, order for "system frequency jumper--cpu frequency jumper--dimm", set CPU voltage jumper should be careful, should not set too high.

9. Check parameter settings

Check that the CMOS parameter settings are correct and that the system software is set correctly. Check that the video card is in good compatibility with the motherboard. It's best to check the data for setting up.