HOW TO REPAIR A COMPUTER OR LAPTOP THAT IS ON BUT DOES NOT DISPLAY

For a computer to boot is different from a computer to on, when a computer or laptop is on you will see light on the casing, probably hear the fan blowing from inside and even hear some sound but nothing will show on the screen while in booting, it will display on the screen or monitor.

Many things can cause your laptop or computer not to display; fixing a computer with this problem could take 1 to 2 hours depending on why exactly the computer or laptop isn't displaying anything on the screen or monitor, which we'll figure out as we troubleshoot the issue.

1. Test your screen or monitor. Before you begin more complicated and time-consuming troubleshooting make sure you test your monitor or screen to confirm that it is working properly.
It's possible that your computer is working fine and your monitor is your only problem.

2. Verify that your PC has fully power cycled. In other words, make sure your computer has completely restarted - make sure that it's coming on from a completely powered-off state.

Often times a computer will appear to "not be on" when actually it's just having problems resuming from either the Standby/Sleep or Hibernate power saving mode in Windows.

Note: You can power off your computer completely while in a power saving mode by holding the power button down for 3 to 5 seconds. After the power is completely off, turn on your PC and test to see if it will boot normally.

3. Troubleshoot the cause of the beep code if you're lucky enough to get one. A beep code will give you a very good idea of exactly where to look for the cause of your computer turning off.
If you don't resolve the problem by troubleshooting to the specific beep code, you can always return here and continue with the steps below.

4. Clear the CMOS. Clearing the BIOS memory on your motherboard will return the BIOS settings to their factory default levels. A BIOS misconfiguration could be why your PC won't start up all the way.

Important: If clearing the CMOS does fix your problem, make sure any changes you make in BIOS are completed one at a time so if the problem returns, you'll know which change caused your issue.

5. Verify that the power supply voltage switch is set correctly. If the input voltage for the power supply is not correct (based on your country) then your computer might not turn on completely.
There's a good possibility that your PC wouldn't power on at all if this switch is wrong but an incorrect power supply voltage might also prevent your computer from starting properly in this way too.

6. Reseat everything possible inside your PC. Reseating will re-establish the various connections inside your computer and is very often a "magic" fix to problems like this one.

Try reseating the following and then see if your computer begins to display something on screen:

• Reseat all internal data and power cables
• Reseat the memory modules
• Reseat any expansion cards

Note: Unplug and reattach your keyboard and mouse as well. There isn't a great possibility that the keyboard or mouse is causing your computer to not turn on fully but we might as well reconnect them while we're reseating everything else.

7. Check for causes of electrical shorts inside your computer. This is often the cause of the problem when the computer powers off by itself but certain shorts can also prevent your computer from booting fully or showing anything on the monitor.

8. Test your power supply. Just because your computer's fans and lights are working does not mean that the power supply is functioning properly. The PSU tends to cause more problems than any other hardware and is often the cause of a computer not coming on all the way.

Replace your power supply immediately if it fails any test you perform.

Important: I want to make this point very clear - do not skip a test of your power supply thinking that your problem can't be the PSU because "things are getting power." Power supplies can work in varying degrees - one that isn't fully functional needs to be replaced.

Tip: After replacing the power supply, assuming you do, keep your PC plugged in for 5 to 10 minutes prior to turning it on. This gives time for some recharging of the CMOS battery, which may have been drained.

IF AFTER ALL THESE AND YOUR LAPTOP OR COMPUTER IS NOT STILL DISPLAYING, TRY THIS SIMPLE METHOD.

1. Change the ram with a new one to be sure that it is not the ram.

2. Change the processor and put another one to be sure that the problem is not from the processor. (Laptop only)

3. Beside the processor you will see two or one greenish object, it is call the V.G.A it controls the display, Add heating pest on the green side of it. (Laptop only)

3i. use a good and working work station to heat on the pest you have added for 4 to 5 minutes. (Laptop only)

4. After that you fix it back and test it.

Please don’t forget to drop comment and ask questions, Thank you…….

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