Question about Compaq Evo D500 PC Desktop

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Coolmaster 500w power supply

I put the coolmaster 500w power supply in the compaq and nothing happens. Its as though there is not electricity getting to the motherboard.

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First check, using a voltmeter, to see if your power supply is working. Secondly, if it is, then reseat your boards and check all connections (internal and external) and try again. Lastly it could be as simple as the on switch is broken. By shorting the pins on the board where the on switch connects you can by pass this to determine if it is the switich. This should reveal your problem. Tango.

Posted on Feb 05, 2008

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Nothing happens when push start button. power cord etc good ??? is this a power unit failure?

make sure the outlet is recieving power

unplug the tower from the outlet & then replug it in & see what happens

make sure all cords are plugged in correctly in the back of the tower

then if nothing happens after you push the start button, power supply & cord could be bad

the same thing happened to my daughter's pc & had to replace power supply & shorted out the motherboard

Nov 18, 2010 | HP Compaq Presario SR2050NX PC Desktop

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My compaq presario V6000 is stop working out of blue..Don't know why..the power cable is connected but hit the power button,nothing happens..any solution ??

Disconnect all cables from the computer. Press and hold down the power button for about 20 seconds. Reconnect only the power cable and try to turn on the computer on pressing the power button If it turns on then good otherwise, switch the power cable of the computer with the power cable of the monitor as they are the same cable as the power cable could be bad but this rarely happens. Open the computer and see if you see any light on the motherboard, if you do then the power supply is bad. If you dont then both power supply and the motherboard could be bad.

May 03, 2010 | Compaq Presario 5000 PC Desktop

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Not turning on, has power and everything

Do any of the fans spin at all, as though it's attempting to boot up? If not, then double check your power supply to see if it has a switch on it and if it does then make sure it's switched into the ON position. If so, then I would recheck the power connector(s) to the motherboard. If those are well seated then I would start looking at the power switch itself. Those go out from time-to-time. Unfortunately, several eMachine desktops of this model type that I've personally worked on had faulty components on the motherboard; which resulted in having to replace the motherboard. The typical symptoms are that the fans spin and it tries to boot-up, but then nothing else happens: no POST beeps, no video - NOTHING. I have had some of them that just wouldn't show any signs of power\life. I've also had a few of this model type that just stopped working when the power supply went out. The likely cause of that is that the power supply will usually surge when it's dying out; which often results in burning out one or several motherboard components. Once you've reverified that all your cables are connected properly, but you still don't get power, find the 2 wires that connect to your power switch on the case (in your model it's usually the black & white twisted wires. Disconnect the connector, use a small flat-head screwdriver to touch the 2 pins that the connector was attached to. Be careful, there is electricity passing thru these 2 pins when touched together (jumpered), as well as the other pins if you accidentally touch the flat-head to another jumper pin. It should only take a second of jumping the 2 pins for it to start. If it still doesn't start this way, then I suggest replacing the motherboard. You can find good Micro-ATX motherboards on ebay for pretty cheap. If you still want to use your current processor, then make sure you get a motherboard with a CPU socket that's compatible with your CPU. I believe that your CPU is compatible with Socket 775.

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My problem may be a bad processor or mother motherboard,I keep blowing out power supplies. any idea?

usually the parts are some what associated a lot PSU>motherboard, if your power supply got busted due to a possible power surge then there is chance that the motherboard might be affected to. try having a UPS it will help a lot esp during power surges..

Feb 17, 2010 | E-Machines T2792 PC Desktop

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Unless your household electrical service is running at 230 volts, there's absolutely no reason to set your supply for 230. When you choose the 230v setting the supply REQUIRES 230 volts to become operational...Which is not going to happen on a 115 volt service.

Oct 20, 2009 | Compaq Computers & Internet

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Acer L100 will not power up.

Need to change out the power supply..just open the case to get the wattage should be around 500W, then go to online computer store for new one..easy to install just a couple of screws..but heres a tip, if you have a digital camera take a picture of where all the wires go on the motherboard before you unplug them..not good some are 12V, 5V and 3.3V, wrong socket and you gonna be buying a new motherboard too...good luck..pls rate this solution.

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Power light comes on but nothing appears on monitor

Mostly your heatsink damaged your motherboaard. check caps lock LED and Number Lock LED are working after switching on. If not ur motherboard or processor get damaged and u had mentioned what happened. Ur heatsink shorts some circuit in  your motherboard

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Wont turn on

If you press the power button and nothing happens, most likely you will need a new power supply.  If all the fans and whatnot come on when you press the power button, but you get no video, I would remove the RAM from the motherboard, and see if you get video.  If you are still getting no video, but the fans are all coming on, there is still a slight chance that it is your power supply, but most likely your motherboard.

Mar 30, 2009 | Compaq Presario 5000 PC Desktop

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Compaq Presario SR1030NX fails to start

Sounds like the power supply or motherboard is biting the dust. U may consider power off, open case and clean out the dirt, check U'r connections and if the power supply smells, replace it.
Else replace the pc. When the power supply dies, it usually stresses the motherboard out and it dies later, sooner.

Jun 02, 2008 | Compaq Presario SR1030NX (DW256A#ABA) PC...

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