Question Keyboard works only if CPU is physically touched by human , earthing problem ?

[Deepak Pundir]

As tittle describe, Keyboard only works if CPU is physically in contact with human. As soon as I take my hand off the CPU, keyboard stop working.

 

[jay32267]

As tittle describe, Keyboard only works if CPU is physically in contact with human. As soon as I take my hand off the CPU it stop working.

It sounds like your case isn't grounded.
There are lots of ways to fix this.
You could try a different outlet for starters.
Also try a different power cord.

 

[Ralston18]

No disagreement with @jay32267

However, you should not be touching the CPU inside of a powered up system.

Do not do that again.

If there are grounding/power problems then brushing against something else may not end well for you and/or the system.

Update your post to include full system hardware specs.

What case are you using?

Make and model keyboard - USB?

Do you have a multimeter and know how to use it? Or have a family member or friend who does?

Caution is advised.