Yes i have a Pismo with this problem too, accept mine has the logic pwb issue. if i boot from the dvd rom it will boot to a point and then it locks up. so i took the harddrive out and put my ear on it booted and it didnt even move or make any sound.Is there any kind of logic pwb fix?? im very good at soldering and such.if not Mine is DEAD!!! its a nice unit. clear screan (well as far as i can tell). the battery is charging, has DVD rom and firewire, usb and ethernet and modem and all the cool bells and whistles... its all good i got it from goodwill yesterday. i had a powersupply form my clamshell that worked on it.