hi,try to reset pram.here is how: turn off your computer by holding the power button for 5 seconds
Already done that & NVRAM reset
after power it on again, Immediately press and hold the Command,Option (alt), P and R keys
do you have any antivirus software install?
No, fresh install
after HD reformat
Tried the same with just the battery.
Still no change
Tried killing powerd, but process is restarted automatically
try open disk utility, select your hard drive from left panel, click on first aid tab
it restart itself
Did that, repaired permissions & status check. Nothing abnormal
You still want me to do the above ?
i.e. first aid ?
does the system auto power up
No. Just shut it down again, light is off & disk is spinning
Now I have to hold the power button so that it will shut down
Also, same issue in safe mode as well
Same behavior with admin account & a normal user account
I have applied this patch as well,
No change yet.
Do you have any further suggestion ?
working in apple repairs for almost 10 years, seem to me you got a logic board problem. power issue on your logicboard. I can help you fixed software problem, but if it a hardware. I recommend that you bring it to apple store to take a look.basically if you do a fresh installation that removed troubleshooting steps from software to hardware
Actually, I think it is a software issue as prior to the upgrade I had SL 10.6.8 which had no problems shutting down or sleeping.
seem to me like the spec of your computer can handle Lion osx
what you can do to test it out, what really caused the problem is to reinstall your old osx
i do have some people after upgrade osx, somehow it damage the machine and problem starting to shown after installed.
but then when they reinstall old osx
problem still there
I dont know what it is, but some few cases, Lion does put a lot of pressure on the hardware and crashed it