My setup:
I swapped the old (dead) HDD on my Lenovo IdeaCentre B305 4031-3CU (Black) desktop with a new 3TB HDD.
I installed Ubuntu 12.04 on it.
My Lenovo has a touchscreen and Bluetooth keyboard/mouse.

(1) Touchscreen is not recognized, does not show up in the system profile and doesn't work either.
(2) Bluetooth adapter does not show up on System Settings -> Bluetooth. But keyboard and mouse work.
(3) The mouse is a bluetooth 2 button mouse with scroll wheel. Except the scroll function, everything works, including functions pertaining to clicking on the scroll wheel.

Could someone please help me resolve issues related to touchscreen and mouse scroll functionality?
Thank you!