I have a similar but older g4 tibook that inexplicably tanked and gives no response to power whatsoever. No apparent cause. Didn't figure out why so it's prolly heading for the garbage pile. Do you get any signs of life at all? Chime, screen flash, sleep light, anything? If so you could try a pram reset. This nukes and defaults all special settings at the openboot level, before the OS is loaded or anything like that. If I recall corretly you have to hold down option-apple-p-r right after hitting the power button, but you might want to verify that sequence via google or something. Legend has it that to even more completely clear everything from pram you're supposed to hold those keys down until the chime rings three times, then all settings are wantonly smashed back to factory defaults. Sounds like a fairy tail to me, but you know Jobs.. hth On 09/30/10 14:04, H F wrote: > > I have a TI 1gig/1gig that until recently worked perfectly, but now will not start. The power supply is working (switched with my laptop) it has a new battery that has been in it for at least 6 months and all the lights on it show it is fully charged. I've held the power button down for 10 seconds, nothing. Took it to a User Group meeting and they pried the keyboard off to find the reset button...that didn't work. > > Is there anything else I can try? >