HP Prime G2 Graphing Calculator won't type more than 1 character

[Mr_Butter]

I left my calculator charging overnight, and when I turned it on to use it, it wouldn't type more than 1 character at a time. Touchscreen and some of the other buttons work, but the responsiveness is very inconsistent. The screen looks like its vibrating ever so slightly. I should note that the calculator works normally when it's plugged in, but not when disconnected. It's happened before and I remember I pressed some buttons together simultaneously and it rebooted/reset, but I forgot the combination.

My calculator is pretty new (owned for like a month or so) and its been treated gently.

[WAWood]

Sorry. but we here don't provide support for calculators.

To get to Customer Service, you have to enter the serial number of your PC, and since this is a calculator, that probably will not work.

Here is the link, anyway:

https://www.hp.com/us-en/shop/cv/customerservice