I have an emachines T2796 which can not be turned on. I suspect either the power button or the motherboard is bad.

Here is what I have done so far in troubleshooting: I disconnected all power connectors except the 2x10 connector and the 2x2 connector near the processor; removed the memory module and pci cards from the motherboard; and disconnected the ribbon cables from the motherboard. With the power cord plugged into the electrical outlet, I saw a little green light on the motherboard. When I press the power button, no light on the power button is shown to indicate it is turned on; the fan does not run; nothing appears on the monitor; and no beep code is heard.

I replaced the power supply and left everything as described above but it made no difference. Can I conclude from this that the power button is defective or the motherboard is defective?

If the power button is defective, how do I GO about fixing it? It appears the wires from the front panel are correctly attached to the motherboard.

Please help!
If you are VERY CAREFUL try this:

Note where the power wires connect to the jumpers on the motherboard from the power button / disconnect power to the computer / remove the wires to the power connector / repower the computer / use a VERY small screwdriver and CAREFULLY touch the 2 power pins with the blade of the screwdriver.

If it doesn't power up, most likely bad motherboard / if it DOES power up, you've got a bad power button.

Alan <><

Usually I've found that if one or the other (motherboard or power supply) goes bad on an EMACHINE, the best thing to do is replace them both. You can just get a same switch from the electronic shop to try out. It's cheap anyway.
a SAFER way to test the switch WOULD be with an ohm meter.
Hi Michael (or anyone else), I went to a local electronics store but cannot find a switch that is convinient to use on the jumper pins. Please describe the switch that is most suitable for this purpose.

Thanks!Try this. Be careful....

Good luckCan I use a jumper to connect the power pins on the motherboard and then turn on the power supply to test the power button (and motherboard)? It seems to me this would be the equivalent of touching the two pins with a VERY small screwdriver. This would be the safest way to do it for this somewhat clumsy man!If you are referring to the mobo pins which are connected to the on/off switch cable then YesQuote

Hi Michael (or anyone else), I went to a local electronics store but cannot find a switch that is convinient to use on the jumper pins. Please describe the switch that is most suitable for this purpose.

Thanks!