Its a weird one but I expect it from hardware this old. When I boot up my 1.3 A500 from cold, very often the caps lock key flashes in a burst of 3 and no key entry is possible. I looked it up in the manual and it is a "watchdog timer test failure" but I don't know what this means and how I can fix it. Occaisionally while it is in this state repeated key entries are registered without actually being pressed like jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjnnnnnnnnnnnnnnnnnnnnn. Eventually if I warm reset the machine the flashing caps lock goes away and it works. What do you reckon? Caps? Or try a new keyboard maybe. Will a 1200 keyboard work in a 500?