The computer won t turn on with specific instructions .

It is estimated that it is a hardware problem, and you may be able to find out where the problem hardware is by listening to whether the alarm tone is normal. You unplug the graphics card and wipe the gold finger with an eraser (on both sides).

Check your computer hardware.

The explanation of the problem is not detailed and clear, and it is impossible to determine the specific cause. To sum up, the following detection methods and solutions are analyzed. (The fan rotated by the landlord is "host CPU cooling fan" or "host power supply cooling fan") If there is no response when pressing the power button (for example, the monitor has no display, the host has no running sound, the hardware has no self-test alarm, etc.) 1

Check whether the host power supply is working first (intuitively, you can listen to whether the host fan is working, such as the operation instructions, 80% chance that the host power supply is intact, but there is still a 20% chance that the aging function of the host power supply components is weakened, resulting in the abnormal output of "voltage and current" can not reach the normal operation of the computer, and the power supply output "voltage and current" can be measured with a multimeter. If you do not have professional knowledge of electronic components, under the premise that the power supply fan is rotating, if you still suspect that the power supply is faulty, you can replace the power supply with other computers. In the first step of testing, please first determine whether the voltage of your household electricity is normal, such as the voltage of 220V residential electricity is too low (for example:

For 200V or 190V power voltage, some host power supply will not boot or will not boot normally) will cause the computer to fail to boot normally. 2.If the host power supply is intact, observe whether the CPU fan is running (if the CPU fan is running, it means that the power supply failure in step 1 is not a big deal, but it is not absolute.

If the CPU fan is running, the computer still cannot self-check and the display cannot be displayed, and observe whether the "capacitance" of the motherboard is swollen, bursting, and slurry. (The undamaged capacitor is shown in the following figure: the visual inspection of the capacitor head is flat, and the imitation burst bayonet is clearly visible, and the bayonet is flat and smooth without cracks, bulging and slurry.)

Secondly, visually inspect the back foot of the capacitor should be close to the motherboard, and firmly soldered on the motherboard, and the capacitor cannot be moved by slight shaking by hand) (the damaged capacitor is shown in the figure below, and the top of the capacitor is swollen, bursting, and slurry), if the above capacitor is damaged, the motherboard capacitor needs to be replaced immediately (**The motherboard capacitor is about 20 yuan). The phenomenon of failure to boot normally due to capacitor burns on the motherboard accounts for 70% of the hardware failure ratio of boot hardware3In the analysis, the electronic components of the motherboard are seriously damaged, and the problem needs to be professionally identified and repaired.

4.In the analysis, if there is no problem with the motherboard, the computer still has no self-test, no display and cannot be turned on, and now it will be testing the peripheral hardware, and its detection sequence is CPU, memory, graphics card, hard disk and other peripheral hardware. Since the problem is not clear, it can only be analyzed so far.

3 steps and 4 steps are too general and inclusive.

System corruption. Either that, the CPU temperature is too high. You open the case and take a look, disassemble the accessories and put them back on.

Plug and unplug the memory module again, if it still doesn't work, VGA mode starts, if it doesn't work, then reinstall the system.

Your motherboard may be broken.

You remove the power supply from the motherboard and put it in in a few minutes. If it doesn't work. It's the motherboard that's broken.

Even the keys will fail.

The power supply is normal after the motherboard is discharged, which sounds a bit mysterious, and the motherboard discharge is a way to adjust the power supply of the motherboard, and it has nothing to do with the power supply.

Landlord, most of your situation is a problem with the power supply and the motherboard, and the instability of the power supply is very damaging to the motherboard. Even if your power supply returns to normal operation, the motherboard is probably hanging.

Your keyboard and mouse are not responding, obviously the Southbridge chip is broken. As for whether there are other parts damaged, professional maintenance personnel need to see it to know.

My personal opinion is that this machine should not be moved, and the use of a damaged power supply will expand the scope of hardware damage to the host, and it will not be good to burn out the whole machine.

The best way is to take the whole machine to the computer city or computer hospital for overhaul one by one, first check the power supply motherboard, what is broken and what to replace, or let the after-sales repair can also save costs. It's hard to do this thing at home, but you can't do it, so you have to work harder.

The chirp is the reason why your memory isn't plugged in.

The first screen of death is probably like this.

First of all, BIOS data may be lost.

You can flash a BIOS to try.

The possibilities are high.

It has very little to do with hard drives.

Because the third screen to the scroll bar, if it crashes, it may have a lot to do with the hard disk, followed by iO

Network card, sound card and other related chips.

If there is a break.

May cause a crash.

It's also possible that some of the modules in your bridge are broken.

Causes a crash. At the same time, memory is not excluded.

There is a problem with the graphics card CPU. Let's take a look at the specialty store.

Formatting and reinstalling is to remove all the things in your hard drive, which is equivalent to an empty hard disk to install the system. You are stuck to see if there is a hardware problem, I guess there may be a fan not turning, and many other problems.

The next movie is put on the table to the unlikely one. We'll see.

Safe mode also does not boot.

It's time to reinstall the system.

The reason why the computer can't be turned on is because the computer files have not been completely saved and the power is cut off in the case of insufficient power, resulting in the system file corruption and the boot cannot be completed, the solution is to press F8 after the boot POST is completed

Choose whether the last correct configuration attempt will work, and if you can't boot the system yet, you can only reinstall the system or use one-click restore to recover!

If at the time of booting, the monitor shows a blue screen and a bunch of characters appear. This is mainly due to the loss of important system files of the computer due to irregular operation when using the computer. Press "F8" when booting up, and select "Last Correct Configuration".

If it doesn't work, you can restore the system with one click.

The computer won't turn on, you can try unplugging the wire. Try to turn it on again, it may be dead, the result is that the computer can't be opened, if it doesn't work, you'll be fine, find a computer expert to open the computer for you, otherwise you can't open it, I basically can't open this computer.

What should I do if my computer doesn't turn on?

1. Power on the computer host first, check whether the indicator light on the chassis is on, see if the power supply fan is rotating, if the host is powered on normally, and then see if the indicator light on the display is on, if both are powered on normally, then the power failure is basically eliminated.

2. Check that the power socket of the computer is in good contact, whether the power cord is broken, and whether the plug-in board is energized. If the wires are in good condition, it may be a problem with the host, and then you need to ask professional maintenance personnel to repair it.

3. Open the side cover of the main chassis and check whether the CPU radiator fan and the power supply fan are running, if the fan is not running, then either the motherboard or the power supply is wrong.

4. If the CPU radiator fan and power supply fan are running normally, it may be that the memory module is in poor contact. After shutting down, unplug the memory, use the eraser to erase the gold finger of the memory, then plug it in a different memory slot and then turn it on.

5. Dust is also a big killer that causes the computer to not turn on, if there is too much dust, it should be cleaned up to avoid short circuit of the motherboard.

The above is how to troubleshoot and solve the problem step by step when we encounter a computer that cannot be turned on.

There is no response after the computer is turned on, in this case, first judge whether the computer circuit is powered on, check whether the computer power light and display are on, if not, replace the power line, try to exclude the power supply.

Press F1 to enter the system settings, press Enter in the first row after entering, there is a time setting, press F10 after the time is set, in.

OK, just press enter.

Know how your computer reacts.

Plug all the accessories inside the case back in, and then I feel that your case is not grounded, you use a metal wire to connect one end to the case case and one end to the ground, see if that can be solved.

The system is redone, and the memory is inserted once.

1. You can try all of them in the following ways:

1: Unplug the cable from the monitor and the console, and plug it back in.

2: Pull out the memory card and carefully wipe the gold finger with an eraser, and then blow the memory slot clean with an inflatable leather bag. Then reinstall the memory card.

3: The graphics card still follows the above requirements.

4: If the contact between the memory card and the memory slot is poor, you can use hot melt adhesive to fill the gap on both sides of the memory card.

5: If the memory card or the memory card slot is damaged, then the only way to replace it is to replace it.

1 Short: The system boots normally.

1 Long 1 Short: There is an error in the memory or motherboard.

1 long and 2 short: The monitor or graphics card is wrong.

1 Long 3 Short: Keyboard controller error.

1 long 9 short: The motherboard BIOS is damaged.

Constant ringing (with long, intermittent sounds): The memory module is not plugged in tightly or damaged.

Keeps ringing: The power supply and monitor are not properly connected to the graphics card. Check all the connectors.

Repeated, short ring: There is a problem with the power supply.

Motherboard Failure Warning Sheet for AMI BIOS.

1 Short: The memory refresh failed.

3. Short: The basic memory of the system (the first 64KB) fails to be checked, and the memory needs to be replaced.

4 Short: The system clock is wrong.

5 Short: Processor (CPU) error.

6 Short: Keyboard controller error.

7 Short: The system is in real mode and cannot be switched to protected mode.

8 Short: Displays a memory error.

9 Short: BIOS test error.

1 long and 3 short: memory error.

1 long 8 short: the display test is wrong, the display data cable is not plugged in well or the graphics card is not plugged in firmly.

It should be noted that in practice, it is found that most often encountered by many users of this kind of black screen failure is due to the intermittent horn alarm sound emitted by the memory module is not plugged in or damaged.

If dust enters, you can remove the memory module to clean the memory slot or memory, or plug it in another memory slot, or try to change the memory.

According to your description, it is generally a fault of the graphics card, and to repair it, you must open the case, unplug the graphics card and wipe the gold finger to see if it is normal, if it is not good, you have to replace the graphics card.

Take out the memory and wipe it, and then put it back in.

Causes and solutions:

1. The memory module is loose or damaged.

Solution: Use an eraser to wipe the gold finger of the memory module and reinsert the memory stick; Replace the memory module.

2. Poor contact of the graphics card.

Solution: Same as memory method.

3. The main engine is short-circuited.

Workaround: Clean up the host and replug the wiring.

4. Motherboard BIOS problems.

The motherboard BIOS stores important hardware data, and if it fails, it can cause the computer to not boot.

Solution: Go to the motherboard BIOS settings page and restore the BIOS to the default value.