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When i turn my computer on, the monitor does not click on. i have checked all leads, and power supplies. the monitor has power light, but will not engage with computer. any ideas, please, driving me up the wall.

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I most probably thing that the tube of your monitor has busted cause there was a problem for my friend and when he took it to the repair shop they said it was the tube.....

Posted on Mar 11, 2008

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How can you check power to computer


Does your monitor light up, if so, swap the lead into the tower and if it still won't turn on then you know it's not the lead.
It could be the power supply, you could try swapping for a known working unit to check.
If still won't start, then unplug everything from the motherboard (except the power supply) and turn on. It should start making lots of beeping noises. If it does, replace each plug in turn till it doesn't then you know what to replace. If it doesn't, it's probably the motherboard that's faulty.

May 05, 2013 | Computers & Internet

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I have an old hp v75 desktop that the monitor won't turn on all the lights are working, fan running, nothing wrong with the power supply, but when I press the power button it turns on, but the monitor...


First remove the vga cable from the desktop and see the monitor shows no conection if showing there is no problem with ur monitor if not change the monitor if showing conect the cable back to ur desk to vga port then check the ram remove the ram clean the surface with clean cloth then rub the print using an eraser then insert the ram and switch on if still no display change the ram if still not working remove the processor heat sink na clean th surface of the processor and the heat sink apply a thin layer of heatsink solvent or thermal paste fix the heat sink then restart the computer

Jun 29, 2012 | Computers & Internet

3 Answers

My monitor wont turn on


Test all leads that attach to your hard drive including electrical extensions,IDE,SATA

the leads from your ((motherboard to your hard drive)) make sure they have a secure connection and are not faulty or just replace them they might be faulty make sure all leads that are attached to your drives dvd\cd 3 1/2 inch floppy have secure connections and are not faulty even the electical extensions


even something as small as an electrical fan and its lead can cause this problem or just replace them they could be faulty a computer needs all electrical power and data to continue through every working device and to have an end so any faulty leads will end up with a computer error


make sure your graphics card is securely seated with no dust built up or in the socket


hope this helps you

Oct 19, 2011 | LG W1934S-BN 19" Monitor

2 Answers

Monitor was in standby mode, computer was on. Now it shows no signal and when we try using the menu button (2) it flashes white, black, red, green, blue then a teal color.


the monitor is not receiving a signal from the computer which is why the multi coloured bars are showing. Ensure the lead is connected and is connected to the correct port of your computer. If it is connected correctly then either your graphics card is faulty or the lead, or monitor is

Apr 03, 2011 | Computers & Internet

1 Answer

Screen does not turn on but green light is on.


Green light indicates the monitor is getting power. Nothing coming up on the screen indicates, No Signal.

No signal from the computer. This means the computer itself isn't working.

A bad power supply in the computer can cause this. A bad power supply is the leading cause of desktop computer failure. It is replaceable, and can be done by the owner relatively easy.

You may have a computer tower that the Power light comes on, you hear fan/s spinning, (Including the Power Supply fan), and it sounds like the harddrive is running.

ALL the lights in your computer use less than 1 Watt.
EACH fan uses 2 to 3 Watts.
A harddrive sitting there spinning in an endless loop, consumes about 2 to 3 Watts.

A Processor uses 51 to 125 Watts. Depends on what Processor it is.

A weak Power Supply will have enough power for lights, fans, and that harddrive sitting there spinning.
It won't have enough power to turn on the Processor.

[No processor operating, then the harddrive sits there spinning in an endless loop, because there is no processor to find the boot sector]

For a test, connect your monitor to a know good computer. See if it works.
Now connect that other monitor to your computer.

Sep 05, 2009 | Sampo P7011M (Silver) 17 in. Flat Panel...

1 Answer

Dead LCD Monitor


Check if there is power voltage in the collector pin of the horizontal transistor. If there is voltage your power supply is good in the problem maybe is the high voltage section. but if there is no voltage i think your primary power supply circuit have a problem. Try to open the pin of the plyback connected to collector of horizontal B+ and open the computer . if the light indicator on the problem is maybe the plyback or the horinzontal section

Apr 06, 2008 | Gateway FPD2275W LCD Monitor

2 Answers

Monitor wont turn on green light blinks but makes a clicking noise


hi there, light blinks constanly means a shorted electronics parts, most of it are in the horizontal sec., and power supply. check first the power supply if you have a constant voltage output, else your prob . is in the horizontal section. do somr test and check up. ty

Feb 18, 2008 | Samsung 460PXn Monitor

2 Answers

Nec multisync 2080 monitor


You don't really need to replace the power supply, you can repair it by replacing the bad capacitors. I've done it to 2 Nec monitors and it works. However I do not believe its you power supply because you are getting the power on light.

Oct 16, 2007 | NEC MultiSync LCD2000 Monitor

1 Answer

Problem getting computer to turn on


Try removing the power lead from the back of pc for atleast 15 minutes and re-connect. It may be a power supply unit fault that is showing connection but not powering the motherboard. Open up the side of pc and check the main leads that come from the power supply unit to the motherboard connection are'nt dissloged in any way, or unplug the motherboard connector and place in again this might re-set it.

Dec 18, 2006 | HP Pavilion a622n (PC108A) PC Desktop

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