ideapad 330

I have a Lenovo Ideapad 330-15ARR, it has 4GB DDR4 2400mhz ram (soldered). I decided to upgrade it with another 4GB DDR4 2400mhz ram. When I first installed it, the first thing I did was to run the Windows Memory Diagnostic Tool and there was no problem at all, the newly installed ram is fine...

Running Windows 10 on an Ideapad 330-15IKB. Started having issues yesterday with the keyboard - the cursor would revert to the beginning of the line while typing, making it impossible to type a legible sentence. It also started typing by itself on the log-in screen, making it hard to type my...