Computer SORTA shuts down when i unplug a USB Drive on the front. more info

So i have a late model 05 G5 and there are 3 ports on the front of the computer. the audio headphone jack, usb, and fire wire 400 (or w/e).
my issue is...
When i try to unplug any, and I do mean any type of USB connection, If i unplug the USB device the computer; display turns off and the computer goes into hibernation mode.
I press the power button. everything thing turns back on and even resumes my download.
now the weird part...
when I go to unplug the USB device and TOUCH the computer (meaning fingers on the USB device and touching the mesh front part of the G5) Nothing happens or everything is normal.
my question is,
is there a electrical charge happening when i disconnect the USB drive, when im not touching the computer and the USB device.
this may sound weird. but no more weird to see it actually happen. thinking my computer is possesed.
info is great. i mean its not like i prevents me from any but more info the better.
later
dub

Yes, the device that you linked to is what we are talking about. Your voltage will remain constant whether or not the incoming line sags, surges or just drops out.
However you may also want to call an electrician as you may potentially have a poor earth-neutral bond and that is not a good thing. Was everything plugged into the same power strip? Have you tried another outlet in the house/apartment to see if it is just a bad outlet?

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Computer SORTA shuts down when i unplug a USB Drive on the front. more info

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