remove static charge before building up computer?

[brannsiu]

hi , people say touching the unpainted part of computer case help to remove charge on body (or grounding), but how to ensure the unpainted metal part is grounded to earth ? should i turn off or turn on the main switch before my hands touching to the metal part? Thanks

 

[MJSBLUES]

Just touching a metal surface WILL NOT get rid of static build up unless that metal is grounded.

All computers use 3 pronged cords on the power supplies, so provided the machine is plugged in to a properly grounded outlet, just touching the metal frame of the computer before touching anything else is sufficient.

 

[TenPc]

You should not be touching the PC innards when the motherboard light is on, turn off the rocker switch at the back of PSU.
Otherwise, what MJSBLUES said, as well.