PC Turns On But No Display

Desktop computer errors range from electrical to software and hardware problems. If you have ever experienced an issue with your pc where the pc turns on but no display, it could be any problem from electrical, to hardware or software issues, or a combination of these. Let us know more detail about ‘PC Turns On But No Display’.

PC Turns On But No Display

If the pc turns on but has no display, it means that the monitor isn’t receiving a signal. Either it is because of a loose video cable, damaged video cable, or a defective graphics card (or integrated GPU). If there is no startup chime, then the problem is with your pc like a bad motherboard, power supply issue, bad Ram, or boot issue with the OS.

Diagnosis And Possible Fixes to When Pc Turns on But No Display on The Monitor

If you turn on your pc but have no display and no lights on the keyboard/mouse. Motherboard LED glowing, CPU fan spinning, if you have no beeps or any response but just lights and fans running, then there are only 3 things that could have gone wrong 

• PSU went bad (find out how old the PSU is)
• CPU overheated, heat sink clogged or overclocked or just the weather and placement of that computer does affect your PC.
• Bios could be corrupted or possibly blown.
• you can rule out the ram because if it’s a ram issue then when you switch on your pc it should give you beeps.

The Solution

There is one possible solution that might work. If it’s a glitch, 

Remove everything from your motherboard, eg, rams, processor, HDD cables, even the CMOS battery, the only thing that should be attached to the motherboard should be the power cable from the PSU that’s all, no peripherals, keyboards mouse VGA display cards, remove all the power connections from HDD’s and any other drives or ports.

After you are done with stripping your motherboard, shift your CMOS jumper to clear CMOS, connect power and switch on your motherboard, remember no rams, no processor, no VGA or anything, let it run for 10 minutes, you will hear nothing from the board but just a few lights on the board, this process is used for discharging motherboards, mostly done to those computers that are kept in storage for a long mouse time.

After completing this process, remove the power cable from the board, change the jumper setting to normal position, install a new battery, and install rams, processor and VGA but don’t attach the HDD or any other drive or stuff just attach the critical stuff, attach power cable and start the PC.

If the problem was a glitch, then your PC should be back to normal and running on factory settings, if it’s a hardware issue then considers a replacement

Pc Turns on But No Display and No Keyboard and Mouse Work Either

Sounds like it is failing before it gets through the POST (Power on Self-Test). Meaning it is finding a hardware issue that prevents it from booting up to the point where it can send out any kind of display.

The Solution

Check and see if the indicator light on the keyboard comes on when you turn on the Cap Lock. If it does, then it is getting to the point where it knows the keyboard is there. That is about 99% of the way through the POST. That usually indicates the issue is with the monitor. Check that it is on, has power and that the cable between the monitor and the PC is plugged in at both ends.

If the keyboard does not light up, then it is an issue with the RAM, power supply or processor. Try resetting the memory chips (with the computer turned off, of course.) If that fails, you will need a professional technician to look at the PC.

Diagnostics 

If your motherboard has any diagnostics tools then run that. If there is no such, then go to the motherboard settings (press `DEL` or `F12` or `F10` or `F2 before this screen appears and after you press the power button. ` based upon your motherboard. [you can see the same on the very first screen (that displays your motherboard configurations) before this screen]) and check if you can find the Hard disk and RAM well.

If still these cannot fix things, use any other computer and use Universal USB Installer – Easy USB Pen Drive Linux to create a bootable Linux and boot that Linux USB into your computer and check if things work well. If it works well with Linux then Install a fresh OS or if it does not work then there is some hardware issue.

Other Possible Reasons for No Display and Possible Fixes

If you are having an issue that whenever you try to turn on your PC, the fans work, but the PC doesn’t give any display or light up the keyboard or mouse, then you should look at the following diagnostics procedure for possible fixes

1. Many PC’s have some way to diagnose the problem… a series of diagnostic lights, blinking the power light in a sequence, etc. 
2. If that fails, turn off & open the PC, then see if any of these change the behaviour:
3. RAM – it could be a bad connection. Try fixing the RAM sticks.
4. If there is more than 1 RAM module, take out all but 1 and try each module individually – maybe 1 or more of them have failed.

It should at least beep or blink the power light if there’s no display hardware available.

1. Take out any other add-in cards.
2. If you have a spare power supply available, try changing it.

If all these fail, Take it to a reputable computer shop.

Alternative Fixes If Computer Will Turn On, But Then Turns Back Off with No Display

1. Check each RAM slot. Make sure a stick of RAM didn’t go bad. 
2. Check power cables. Make sure nothing got just slightly unplugged.

If all that fails, reset the CPU. Make sure no pins get bent on the socket. Make sure nothing is physically damaged or fried. Sometimes too much pressure from the cooler can prevent the CPU from working properly.

Reasons Why the CPU Is Switching on But There Is No Display on The Monitor; Only the Light on The Power Button Is Blinking?

If the CPU fan spinning continuously, displaying no display, no beep, and no HDD light glowing:

You can have it checked with another RAM and CMOS battery.

1. Power. It is common for the Five-volt output to fail and still have the 12-volt active. 
2. It could be the GPU has failed. If you can borrow a good power Supply and a GPU from someone then you can just unplug the 24-pin and the 12-volt to the CPU and the plug to the GPU and then plug in the good Power Supply to test it. 
3. If you can’t get the parts to swap in, take it to a repair shop. Should be easy to diagnose and it probably won’t cost much more.

Possible Fixes Solution When the PC Turns On, The Monitor Displays Its Manufacturers Name Then the Green Light Button Turns Orange and Displays Nothing.

When your monitor is not detecting your PC?:

1. Pull the power cable from the system.
2. Then switch on the computer, to discharge residual charge.
3. Open the case, and take the GPU out.
4. Check for dust/damage in the slot and on the PCI-e connector of the card.

Reseat firmly

1. (Re-)seat power to the GPU. (If available on the card, this has to be done, it is not optional)
2. (Re-)connect connection to the monitor.
3. Connect the main power.
4. Try again.

If the same issue happens after this, there may be a defect on either the GPU or the monitor.

• Try another monitor cable.
• Try your monitor on a different computer.
• Try another monitor altogether.

If that all did not show the problem, the only way left is to try your GPU on a different computer. If the same issue comes up then, replace the GPU.

Conclusion

If your PC turns but the PC doesn’t give any display, Many PC’s have some way to diagnose the problem, a series of diagnostic lights, blinking the power light in a sequence, etc. If that fails, turn off & open the PC, Remove & reinsert all the RAM modules – it could be a bad connection.

Frequently Asked Questions

• Question 1: My PC turns on but I see no display and the keyboard light doesn’t turn on. The only thing on is the LED lights on the PC and the mouse. How do I fix this?

If it is a desktop computer, check your connections on the motherboard. It may be that the graphics card bent and dislodged some pins when it was installed.

• Question 2: CPU Running but No Display. How Do I Solve This?

General troubleshooting you can try is 1) checking for if all cables are tight or not; 2) don’t tighten the screws of CPU fans too tight. You should try to remove the processor fan and processor from the motherboard and look for any damage in contact pads or pins in the CPU or the socket of the Mobo and then re-insert the fan and CPU back in the mobo. Also, try 3) tightening the CPU power cable, removing it and trying to replug it back.