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Monitor saying no signal

Put a new processor in my motherboard power is going to the motherboard and processor but the monitor keeps saying no signal

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  • Anonymous Jul 11, 2008

    the motherboard light ls on ,the cpu fan is on but no sinal to the monitor.I try the video card on a different computer and its working.

  • larry82 Aug 02, 2008

    the motherboard light ls on ,the cpu fan is on but no sinal to the monitor.I try the video card on a different computer and its working.

  • rescomres Oct 03, 2008

    I have no signal to monitor i have power monitor remains blank cannot tell if the board is bad or if the cpu is bad there are no beeps to go on my board is a P4MBMS with a celeron D 2.8 please help

  • Anonymous Nov 25, 2008

    I have the same problem. my pc just stopped working one day.

  • thom_asm May 08, 2009

    every time i go to my computer it keeps saying no signal i thought it was the video card but my video card is only new help!!


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Check the Pins in the monitors serial port and make sure all are straight 15 of em

Posted on Jun 03, 2008

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Mine was doing the same i took it to computer oasis and they said my modem was bad and was affecting other things,,removed it and since i am on dsl that was all i needed to do,,works like a charm!

Posted on May 04, 2009

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My computer moniter keeps telling me that theres no signal please can you help me solve my problem

Posted on Nov 10, 2008

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Monitor display

No Signal

No video signal

(Monitors may also do this, and state Power Saver Mode, or Sleep Mode; instead of No Signal)

1) Check the monitor cable. Has to be ruled out before going on.
Either use it on another known to be working computer, and monitor; or use another known working monitor, and cable on your computer.

Monitor cable checks out go on

2) From here the logical assumption would be to check graphics.
If the graphics are coming from the motherboard, Integrated Graphics; then use a graphics card.
If the graphics is from a graphics card, use a known to be working one, for a test.

[ The I/O area is on the back of the computer. I/O stands for Input/Output. It refers to the Input and Output devices that are connected to the computer; in the rear area.

Mouse, Keyboard, Monitor, audio cables, etc.

If the monitor is connected in the I/O area, the computer is using Integrated Graphics. In the past we used to refer it as OnBoard Graphics.
ON the motherBOARD.

If it is a graphics card being used, it will be in one of the horizontal expansion slots, on the back of the computer ]

However I would like you to jump past that.
Check instead;

1) Is the computer dirty inside? If the Processor overheats it turns off.
(BIOS turns it off) This is a fail safe feature built-in. Keeps the Processor from burning up. (Literally)

Clean the inside of the computer out with a can, or two of compressed air for computers. Use Q-tips, and/or small soft brush (Makeup brush?), to dislodge the heavy 'Gunk', so the air can remove it easier.

2) Ram Memory:
Remove all ram memory modules. ('Stick') Clean the gold plated contact pins with a pencil eraser.
If you are using an eraser on the end of a pencil, and not a solid eraser; refrain from letting the metal band of the pencil, touch the gold plated contact pins.

Handle the ram memory module by the BODY.
The Body is everywhere on the ram memory module, EXCEPT the gold plated contact pins.
The Body is coated with a see-through protective plastic.

Rub up, and down, and across; on EACH contact pin, BOTH sides.
Use air to remove the eraser dust. You can use a can of compressed air for computers, if available; or air pressure from your mouth will be sufficient.


3) Power Supply:

There are two main issues for desktop computer failure;
A) The computer is dirty inside
B) Power Supply failure

Ram Memory contact pins cleaning is an add-on; but necessary.

With a Power Supply having a weak voltage power rail, you could see LED's light, and fans spin; but NOT have enough power to turn the Processor on.

1) If ALL of the LED's (Light Emitting Diode) were on at once, they would use less than 1 Watt of power.

2) EACH fan uses 2 to 3 Watts of power.

3) A typical Processor can use from 51 to 125 Watts of power.
Just depends on what Processor it is.

That is why you can see LED's light, and fans spin, but no signal.

Use a KNOWN to be good, Compatible power supply; for a test unit.


Use a multimeter to test the 3 main voltages;
3.3 Volts, 5 Volts, and 12 Volts. All are DC Voltage. (DCV)
[In comparison two D cell flashlight batteries produce 3 Volts DC ]

For additional questions please post in a Comment.

Dec 26, 2012 | Intel DG41RQ Motherboard & Core 2 Duo...

1 Answer

It doesn't send a signal to the monitor

Initially check the monitor whether it is working good you can check it by removing the monitor cable from the system when you remove cable you will able to see question mark in case of crt monitor this ensures your monitor is working good.
when you power the system whether processor works if the processor works means you can conclude that the problem is with the ram or the video parts of mother board.
Clear the dust in the ram slot and reinsert the ram

Then remove the cmos battery of the system and reset the bios settings.

Check whether the power cables are correct.

then power on the system if you receive display the problem is solved.

If the display does not appear check by replacing the new ram then giving motherboard to service centre

Mar 10, 2010 | Mercury P4VM800M7 Motherboard

2 Answers

I have no signal to my monitor. The asus motherboard is now unavailable. It means changing motherboard, processor and memory. is it worth it? Can I salvage my hard drive if I buy a new tower system...

If you have no signal to your monitor, ther are generally three parts that can cause this: the monitor, the DVI/VGA cable (from PC to monitor) or the graphics card. If I were you I'd try to replace those first, then the motherboard. I'm sure there still are socket 939 motherboards out there, so you will not have to replace memory or processor. Just let someone at a local computer store take it apart, install the hardware on a new motherboard, put the harddisk in the system and reinstall Windows.
(the latter because drivers for the old motherboard may conflict with the new ones. If you don't have any problems with that, don't)

I hope this helps,

Oct 15, 2009 | ASUS A8N-VM Motherboard

1 Answer

No signal on monitor

You might try switching the VGA cable if you haven't. If that doesn't work then I'd agree with you in saying the motherboard is likely fried.


1 Answer

Acer monitor does not get signal every time

If anything try updating the video card drivers. That's what it sounds like, or the monitor is going. The next time the monitor fails to start, just unplug from the input and put back in. If it starts you are looking at a bad power booster on the board. You can also try pluging in another monitor or try that monitor on a different machine. This way you can eliminate which is bad. I had flat panels and crt's go on me and they usually start by this symptom. It shouldn't be the BIOS, if it's been working right along, same with the processor, it either works or doesn't, it's a monitor scenario.

Mar 08, 2009 | Asrock K8Upgrade-VM800 Motherboard

2 Answers


have u check ur memory?... ur videocard and powersupply...thats the main problem of pc if it has no display....just try it one by one...hope it can help u

Sep 10, 2008 | Foxconn (755A01-6ELRS) (K8S755A6ELRS)...

1 Answer

Computer won't boot up

Make sure that your power switch is connected to the correct pins on the motherboard. The LED you see lit may be the stand-by power indicator saying it has power and is waiting for the signal from the power switch.

May 06, 2008 | ASUS CROSSHAIR Motherboard

2 Answers

No signal to monitor when booting.

(1) Remove memory from mother board and start the system if you happen to listen long beep then RAM is not working properly.
(2) Clean RAM conducting area on mother board with clean cotton cloth, put one peice of RAM and test and check the othe peice also, if working you could any sign display . Before doing all these check mother board any LED is glowing if so your SMPS is working after you turn on UPS.

(3) Check for all proper connection for all cables. Have you connected video cable of monitor to mother board VGA (it will not work because it is disabled as soon as you installed XFX GeForce 8800 GT), your viedo output only will come through XFX GeForce 8800 GT VGA port.

(4) If propelm persits Deassmble complete the system and reassmble & do n't connect HDD, DVD, floppy. Cehck with bare mother baord, processor, RAM (put one picese at a time) by connecting viedo cable of monitor

Apr 19, 2008 | ASUS M2N-E SLI (M2N-E SLI GREEN)...

1 Answer

New power supply, but turning on no signal to monitor

well this is one of the nightmare problems I keep got into ..there can be alot of posibilities..but the most common are the video card is damdaged or the mainboard.try to change the video card and check than.if the problem persists,than is a motheboard fault..look to all the condensors,chech the intefrity of your connections..
good luck.
it is  a very booring work.

Feb 03, 2008 | E-Machines (308714) Motherboard

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