Having problems with your Dell OptiPlex GX270 PC Desktop ?
Dell gx270 power switch
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\015 This dell will power up for a millisecond. U can hear the fans start, but then they turn off instantly. When u hit the power button, a green light comes on momentarily, but then goes off immediately. I think I need a new power button bcz u cannot hear it click. Any suggestions?\015
Many of today's computers, including the gx270 / gx280 computers from Dell are really always on. You can see the green or yellow LEDs on the motherboards glow when they are "off" (like a sleep mode).
They are in a "sleep" mode until you push the power switch, which sends a momentary signal off to the motherboard to fully power up and turn itself "on".
I think you have something else happening here. When the system tries to power itself up, and detects a severe problem, it will try to automatically turn itself off.
The problem could be a bad motherboard, power supply, memory or processor. It could even be a failed hard disk that is drawing too much power (shorting out) from the supply.
If you had done something to the system, like move it or open it up for an upgrade, etc.. Look again at all the internal connections, and make sure there is nothing rattling around inside that might also be causing a short.
You could try removing all the PCI cards in the system, removing the power and data cable connections from all the disks (Floppy, Hard Disk, CD/DVD) and see if the bare motherboard (with CPU and memory) will boot by it self. If it does boot, then the problem was somewhere in those items and you can replace them one at a time until you find the problem, or if it all works again then it may have been a loose or bad connection.
If you have another machine available, you could try switching the power supplies and seeing if that is the problem.
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