Ideapad S400 touchpad jumpy when ethernet cable plugged in

I have an Ideapad S400. Lately when i plug in my ethernet cable(router, switch, different cable, tried everything) the touchpad behaves erratic, but only if i run on battery.
Have updated drivers, reinstalled windows even tried ubuntu... same results.
I'm concerned it may be a hardware issue.
Anyone had similar problems?
FIx?
Thank you in advance
Solved!
Go to Solution.

hi piranja21,
Welcome to Lenovo Forums
You might want to try the Troubleshooting steps on this thread, your concern is somehow similar to this one,
Hope this helps,
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Ideapad S400 touchpad jumpy when ethernet cable plugged in

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