Macbook Pro scratchpad is erratic sometimes
The apple suggestions about jewelry, power supply, peripherals etc are irrelevant: One day it works, the next day with no changes, it doesn't work. Without cursor control, I must use the power switch to reboot, which does work. Upon reboot, scratch pad works perfectly for some amount of time that's like "several days" and then fails in the same way: I wake the laptop, enter my password, attempt to move the cursor to my work ... and it is first erratic then non-responsive.