Cannot power up computer with Dell motherboard E21882. Power supply seems fine. Even after I replaced power supply system would still not come up. Can I test the front panel plug to see if the power on switch is working?

It help diagnose problems with your computer

A solid green light means the computer is operating normally.

A solid yellow:- the power is operating fine but your computer not processing data. This could mean there is a problem with the CPU or another component on the motherboard.

A blinking yellow light: power supply is receiving power from the wall, but not functioning properly. This generally means the power supply itself is bad and should be tested or replaced.

A blinking green light means the computer is in standby mode

If you have a volt meter, check the P1 P2 etc...power output. Sound like you power supply may be corrupt.

Try this procedure! click here. After checking your power supply and it is working fine, put it back again into your computer casing. Next thing to do is to check your motherboard switch (power on). Look for the manual of your motherboard and look for the power on switch. If you find it then get a screw driver and short the pin using the screw driver. Be careful not to touch the other pin! But you have to check all the computer components to determine what is exactly the cause why it's not functioning. If it's not turning on your computer while you short the power switch on that means probably your motherboard fail. Other option is, in order to troubleshoot the problem of your computer you must have an extra computer with the same model and plug all your components there one by one to determine what is exactly the problem of your computer. Then you can decide what computer parts need to be replace. Have a nice day!

sounds like power supply failure. You can try removing all of the ram and pressing the power button again. If nothing happens, its either a bad power supply or a bad motherboard.

So you've checked the supply, but you didn't replace it, right? Sounds to me like that's your culprit. It's not able to supply the current to run the processor (the biggest draw) and the output is dropping too low to run the system. A new supply should get you running again.

11.9 is fine-no problem with that

Hi,
It not a common problem. The problem that you are facing is is beacuse of faulty motherboard. The blinking amber is caused , becasue the motherboard is not able to distribute the power signal to the devices . You can follow the link below to trouleshoot the problem if you are comfortable in opening the computer chassis

http://tinyurl.com/8mkpnm


Thanks
Proton

you may consider reseating the P1 and P2 cables (from the power supply) connected to the motherboard.


you can go to www.support.dell.com and enter the service tag of your dell system (found at the back of your system) and look for the manual on how to add/remove the parts of the computer.

thanks.

FIRST IF YOU REPLACED THE POWER SUPPLY OF YOUR DELL PC,
MAKE SURE IS A RECOMMEND POWER SUPPLY FOR DELL COMPUTERS ONLY
BECAUSE DELL USE A DIFFERENT (NONSTARD) PS

AN PLEASE DON'T TURN YOUR PC ON, TILE YOU ARE SURE I'TS A DELL COMPATIBLE POWER SUPPLY
YOU CAN FRY YOUR COMPUTER

ON THE MOTHERBOARD I'T MAY BE THE BIOS (BIOS STANDS FOR INPUT /OUTPUT SYSTEM) I'T A CHIP ON YOUR MOTHERBOARD THAT CONTROLS THE SYSTEM HARDWARE AND ACTS AS AN INTERFACE BETWEEN THE OPERATING SYSTEM AND THE HARDWARE
I'T MAY BE FLASH
IF IS FLASH ,
YOU PROBABLY NEED TO REPLACE THE MOTHERBOARD
OR CALL DELL TO SEE IF THEY CAN FIX IT

Your mohterboard seems to be bad! If you have replaced the power supply and placed all connections in the rightful place, with no result! Your Motherboard is definetly bad!