When I service many a PC, I use a basic "ESD wrist strap" and even these are "disposable types" or quick use sorta thing. It's very basic, just a strap around the wrist. However, long before any of this became the "norm", you open case and touch the PSU or any bare metal to discharge yourself. While the PC is AC plugged in or PSU sw. is OFF, not only the PC -off sw. Of course, it helps if you wear "ESD less prone clothing" as well or immediate area. the working area can be your kitchen table, NOT on the carpet directly, maybe some cardboard on carpet. I hope you get the idea. If you notice ESD discharges before you even try working, use the ESD wrist strap, these aren't that expensive.
If you secure a grounding wire to the PC case, be sure its routed to something that is also grounded.
This weekend I plan to open up my computer, simply to clean and look at some parts that I may be changing soon. I have never done so before, and I know that static electricity is a real concern.
I do not have an anti static wristband, so I plan to ground my computer and myself instead. I would plug the computer into an empty surge protector (plugged into the wall but turned off) and hold onto the frame. I'd like to be sure this is safe.
Can I proceed like this, or will I potentially damage the electronics?