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My main board can't turn on but power supplay no problem

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Re: My main board can't turn on but power supplay no...

First things first:
1) Use your Manual!! ** for all the regular steps, on all power cable, jumpers, BIOS. jumper.
2) secure and put fine your RAMS, on the slots. use RAM according to the manual, Timings/ Speed, voltage (ddr, or ddr2)
3) Use the PCIE video card according, or AGP.
again, Read the Motherboard Manual.***

Posted on Jan 23, 2008

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Re: My main board can't turn on but power supplay no problem - PC Desktops

?re word that please

Posted on Jan 22, 2008

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I have a vtech and it turns on but only does the intro and doesnt pick up my games i also tryed the hold on to the on botton for 45 sec but nothing and it does not have a restart botton

u may problem
1. Plz check power supply section (SMPS)
2. start button is damage or only it power supply section of Main board and wire is damage.
if u this all step is already done. u have another solution that, your CPU cabinet cover.
ii. pull up start button power jack from main board and separate them.
iii. and shot the power pin in main board (where from u pull up the jack) using screw driver or other tools.
I home your problem is recover.

Jul 26, 2013 | PC Desktops

1 Answer

I have done all that you saud to do. Now the problem I have is the computer will not turn on at all. It's like the power has been turned off from inside the operating progam. I have windows 7, is this...


Phase 1
After power button pressed, computer will detect 5 components :
1. Power supply - OK (enough power)
2. Main-board - OK
3. Processor - OK
4. Memory - OK
5. Video Card / VGA - OK
== beep sound .. (1 time) or on the monitor, display appears BIOS ==

The characteristics of damage to power supply
1. Power supply fan does not spin

Video power supply fan not spinning

If the power supply fan is not spinning, the possible cause of damage to power supply. Solution, replace the power supply.

How to check the damage to power supply
2. Power supply is weak (resulting voltage power supply can not turn on the computer or the voltage is less)
The characteristics of damage to the processor

Normal fan without processor

Normal fan with processor

Based on experience, the possibility of damage processors is very small. To check for damage to the processor, install the processor to another computer (for comparison).

The characteristics of main-board damage
Because the new main-board, so the possibility of the main-board damage, very small. The characteristics of damage to the main-board, when the power button is pressed
1. Power supply fan not spinning
2. Processor fan is not spinning
3. Casing lamp is not lit
4. Main-board lamp does not light

The characteristics of the memory damage or dirty memory
1. The characteristics of normal memory, but installation is not correct or dirty

When the computer is turned on, the sound



Picture a
Release Memory

Picture b
Clean the memory slots with a brush

Picture c
Clean the gold layer memory with a pencil eraser

Picture d
Reinstall the memory correctly

The characteristics of damage to video cards

Solution, remove the video card, clean the gold layer with a pencil eraser.

I hope this information helps.

Oct 23, 2011 | PC Desktops

1 Answer

Dell dimension 4600c won't turn on since we had a power outage


if you CPU has a green light it meance your Power supplay is working fine chack back side of your CPU fan is working or not if it's working then just open case
folow the 2 step

1 remove RAM
2 CIMOS beetery which is on mother board leave your CPU for Some thime re fix both i hope you CPU will give you the disply

Jul 19, 2010 | Dell Dimension 4600 PC Desktop

1 Answer

When I presss the power button computer screen stays blank. cannot power processor off.

Something is wrong with the connection wire between your power button and the main board if you pressed the power button on the computer box for a few seconds and still the computer won't turn off. You can open the case and check the connection and replace the wire, or the power button or the main board if necessary. However, you can use the shutdown option of the operating system to turn off your computer too and the reset button might still work besides that issue if you only need to restart while system get frozen.

Jul 01, 2010 | Compaq Presario 5000 PC Desktop

2 Answers

My computer wont turn on

take out the psu completely from the cpu/tower, plug in the power cord,if there is a switch on the psu turn it on, next locate the main power connector (24pin) and find green wire,take a piece of wire and insert it into the green wire connector,next touch the other end of the wire to the psu outer case or a black wire on the main connector,if all is well the psu will turn on,if you have a dc voltage tester check the voltages on the red and black wires on molex connector...5vdc,yellow and black...12vdc.if ok look at the main board and inspect the capacitors to see if they are swollen, if ok
replace psu and disconnect hdd,cd/dvd,floppy ect from main board only leave memory,processor and video, power on if ok shut off and reconnect hdd, power on, if ok shutoff and connect floppy, if ok power off and connect cd/dvd drive.during this testing you will know what is bad.let me know how it turns;

Feb 19, 2010 | PC Desktops

1 Answer

I can't gate this spare pare pq1cg203

Hi. Which model is it from? You can usually repair the power supplies rather than replace them.

May 23, 2009 | Casio Parts Cash Register PC Desktop

2 Answers

Power problem

Can you tell if the Power Supply Fans are running?. It sounds like you may have a bad power supply. or try this, open the Case up and make sure the Graphic Card is Secure in it's slot oon the Motherboard, i know it sounds weird, but it has wored for me on a lot of computers i have worked with.

Let me know if this helps.


May 09, 2008 | Dell XPS 200 PC Desktop

1 Answer

Red power light on, making a noise but won't switch on/off

hi dear customer. add fast check the electric power and voltage. latter , cheking jumper on the main board, total main boart opening the cacing out,servising total main board.

Jan 14, 2008 | Packard Bell iMedia 6826 (P481000502) PC...

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