It is get the screwdriver out and check for loose/bad connections time.
Lenovo are pretty good at supplying workshop manuals and user manuals in PDF form that you can freely download - you might need to sign up, but it costs nothing.
There is also a vary helpful Thinkpad forum.
Lenovo are pretty good at supplying workshop manuals and user manuals in PDF form that you can freely download - you might need to sign up, but it costs nothing.
There is also a vary helpful Thinkpad forum.