has some power applied to the mobo anytime that the power supply is plugged into a 120 volt outlet.
If the supply has a switch on the rear turn it OFF [0 position]. If not, unplug the supply. Turning OFF is best because then your system is still grounded to the house wiring via the third wire of the AC Power plug.
After removing the cover simply touch any of the metal of the case to discharge any static charge. Touch the metal frequently. Dry winter air allows build up of static charge easily if you are moving your feet on a plush carpet.
Remove the battery with care to insure that you don't bend the positive contact such that it doesn't make a good connection to the new battery. Easy to bend it and lose the tension.
Don't pet any cats while working inside the computer LOL.
The time has come to replace my computer clock battery.
This requires removing the case to get to the battery and this gives me pause as I am afraid of messing something up.
I know I am supposed to do something to remove static electricity but not 100% sure how. Please review this procedure.
Are there any more caveats of which I should be aware?
BTW, I justed posted some info on "Grif's Tips" for those interested in maintaining exact time. I'll repeat it here. Just download the free program at http://www.nist.time.gov/
DC

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