New TiBook 867 won't start without "restarting"

[Roald Baudoux]

Hello,

This is very irritating: both under 0S 9 and 0S X, my TiBook won't boot 
with the power button. I have to use the "restart" keys combination (ctrl-
command-power) to have it start and it doesn't even work the first time. I 
have to do this two or three times. the first time i hear the chime sound 
but the computer doesn't start. Also, the old PRAM key combination (command-
alt-P-R) doesn't seem to work.

What's the problem? I have tried the hardware test disk and nothing seems 
to be wrong.

Should I return the computer to the store?

Thank you for helping.

Roald Baudoux