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How to fix a motherboard that doesn't give display?

I've had around 6 PC motherboards that I have changed over the years. I have all the motherboards with me. The problem with them is that there is a light on the board and the fans turn on when I power up the PC but there is no display. This seems to be a common problem for PC users. I need to know what could be causing such problems and if there is a way to fix it.

Thank You

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Denver Braganza, all of this will depend on your trouble shooting skills. It would also help if you tell us what kind of motherboards those are, and if you use the same CPU for all the boards. You said "there is a light on the board and the fans turn on when I power", the light is most likely a 5V power standby light, saying your board receives power. The fan kicking in is also good. Now, I would suggest you try to remove all the RAM and replace it with one known-good module. Then try to restart. You also want to try to use a different video card if you are using to onboard video. Let us know what you find.

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They are all normal motherboards. But the CPUS are different. ONe is an Intel Pentium 4. One is an old AMD CPU. I don't know about the others I have. I have tried putting a single good RAM and also a working video card but still I don't get any display. The fans keep running. Even the GPU fan. The light stays on. But no display. I have tested the RAM, power supply and graphic card on my friends boards and they worked fined. I think it might be a board problem. Almost every friend I have has the same problem and they have had their boards replaced.

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I also had a fujitsu laptop but tgey told me i had to change the board because also my display was dead☹️

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There is a problem of north bridge in the motherboard as it is use to give display to the screens . I was also facing problem like that on my asus mb

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Reheat the north bridge of the motherboard always the problem of asus mb no display.

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Where is that north bridge located on the motherboard?

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clening motherboard ram slats and rams with tinner

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my name lokman from bangladesh brother if my answere you get helpfull u can pray for me

soloution

1, you see mainboard have two power suply one is 20 or 24 pin secend one is 4 pin at first you open the proccesore cooling fan and than cheq proccesore heating normaly if proccesore not hot plz change electrolitic capacitore you can see this capacitore with 4 pin power suply after that if no display you can change mosfet tranjistore you can see with 4 pin power suply after that cheq your proccesore heat normaly that means your pc is ok

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What if the cpu processor is heating normally and still there is no display? Ram is ok i checked. Video card is working. Fans are working. PC makes 5 beeps, no display

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how to change a mosfet without hot air gun ?

could someone pllllz through some light on this

and how to find a faulty mosfet ??

thanxxxxxxxxxxxxx

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@udgzwalle , Check out the links below to see testing and changing for faulty mosfet. Good luck.

I hope this helped you out, if so let me know by pressing the helpful button.

https://www.utm.edu/staff/leeb/mostest.h...

https://www.youtube.com/watch?v=RkWy1Eir...

https://www.youtube.com/watch?v=CSbpCr70...

https://www.youtube.com/watch?v=P74ni0vM...

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Flash the bios of your motherboard.

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im running a pc with intel pentium dual core processor which is of 2 gb ram

it was the oldest pc of mine switched on after long time

the pc fan got started and hdd is on but im nt reciving the vga signal from the mother board what would be the problem…….

can any one help me to fix out this problem

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Denver Braganza zal eeuwig dankbaar zijn.
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