Question about Dell (S423) for Dimension 8100 (3F546) Motherboard

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Can't turn my compuer on

I have changed the mother board and when i connect the plug the computer automatically turns on but the monitor stays blank.I have checked the monitor with another computer and the monitor works fine. All the cbles are connected correctly

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  • BLACKISKNOWL Oct 20, 2008


  • T_Byrd653 Dec 07, 2008

    I have a Dell Dimension 8100 that won't turn on. Power is on, Monitor is good, splash screen won't come up, The computer will not start


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Check on *********** board that your CMOS jumper is in normal mode otherwise change it - also check any beep sound aswell as you remove all the cables ie.. IDE cables, front panel cables I mean only the 2 power cables to the motherboard and try to start the pc by shorting the power switch pin with a screwdriver see the display coming or not ????

IF it is a branded pc - you have to buy the same companies motherboard, normal motherboard will not work with branded pcs.

Posted on Sep 27, 2008

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1 Answer

How to check processor working

Hello dear,

If your motherboard power lamp will be off/on automatically, it could be related to bad supply unplug all connection and plug it again proper if still you have same problem then you can try another OK power supply

Jun 08, 2012 | Gigabyte GA-M51GM-S2G Motherboard

1 Answer


Is the monitor turn ON. Is the monitor still connected to the computer. The graphic card is bad or your monitor is bad or the mother board is bad. Check to see if the fan is working in bark of the computer of the power unit when the computer is turn on. If it is not working then your power unit is bad.

Mar 25, 2012 | Gigabyte Motherboards

1 Answer

Upgraded power supply, upgraded to AMD 965 Quad core, Mother board stops at error C5, monitor blank during this. C5 error says reset video controller. HOW?

try this: 1. turn off the computer 2. disconnect the VGA connector (the cable from the monitor) 3. remove the video card from the motherboard 4. the motherboard has the on board video controller, connect your VGA monitor to that slot. 5. turn on the computer, I hope by now your monitor is ok ;-)

Feb 03, 2011 | Jetway Motherboards

2 Answers

The ATX power supply on my computer went out, so I replaced it with a new one. I connected all the usb and cables in the back, plugged in the power cord and turned on the switch and the mother board powers...

Try refreshing all connections to the motherboard. Also clean the RAM as shown in the image below.cfaa97e.jpg
Resetting the CMOS may also help you in the process. Make sure that the power cable connected to the power supply is disconnected. Change the jumper settings of JCMOS1 (labled 1) from 1-2 to 2-3 for approximately 10secs. (refer to the image below).
Then return to original settings (1-2). Hope this helps.

Oct 06, 2009 | Biostar TForce6100-939 Motherboard

1 Answer

My monitor does not turn on when power is turned on. the monitor stays black. my mother board is an asus A7V8X-LA


When we say monitor doesn't turn on you need to check the power cable if it is correctly plug in, Check the monitor cord if it is plug in directly to your motherboard port. Some motherboard have installed external video card once you have install an video card you can plug your monitor cord to the video card.
When the problem is still occur you need to disassemble the unit. The processor have problem it doesn't display. Remove it and clean after that put a thermal paste so that the heat from CPU will absorbed by the heatsink.


Sep 25, 2009 | Motherboards

3 Answers

No display

check if all cables are connected.

turn on pc...observe all lights

test the monitor to other pc...

if monitor is good
check if everything inside the CPU are connected.

Mar 13, 2009 | Mercury P4VM800M7 Motherboard

1 Answer

Red light and monitor will not start up

you need to shut down the computer and pull the power cord off powersupply then remove the wire harness that goes on to the mother board then press the and hold the computer on button for 3 seconds then plug in the the harness back on the mother board and and plug in all power cords then try to turn on the computer it should give u a beep or the monitor should go from orange to green good luck e-mail me if u want

Aug 07, 2008 | Intel Motherboard

3 Answers

Computer turns on, but there is no display on monitor.

my goodness.. you have spent a lot in your computer i think.. i dont think changing mother board and installing a new vedio card will solve this problem.
as u have said that u have installed a new card make sure that you are giving the connections of your monitor to the gforce card and not to the mother board again.

if connection for monitor is going for gforce properly your RAM is the problem. as per your configuration its single 512mb ram. i would advice you to go and get another DDR RAM(same 512 prefrably) from any of your friend and put it in you mother board in by removing the normal RAM you had.
this will work for sure i think.
if this is not working dont rate me in-approtiate. i just triend my best. sorry and tahnks.. good luck

Dec 28, 2007 | Motherboards

2 Answers


When you changed the graphics card,did you check the bios for the right video source?

Nov 30, 2007 | MSI K9VGM-V Motherboard

1 Answer

Disabled onboard video in bios in hopes that new video card would kick in, now how do i turn it back on so i can see again

with a second monitor and win xp, you can run both videos. just plug in card and plug in second monitor and xp will take care of the will see special messages first boot

May 28, 2007 | AOpen MX4LS (91.88Q10.001) Motherboard

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