MacBook won't reboot after SMC update

ok here's a weird one, anyone else have this problem? ran the SMC update on the MacBook, machine shut down like it's supposed to, but never restarted. if you attempt to restart it the machine just freezes at the blue screen.
machine is plugged into AC power.
SMU reset.
battery removed.
any ideas?

Ill explain in detail what my therory is with the blue screen. The problem is 10.4.7 messed up how pram settings are saved on some macbooks and the pram also saves what system folder the computer loads by default and when the computer PRAM isent saved right the computer wont know what system folder to load thats why you get a weird blue screen when you try to boot, this is why zapping the pram will let you start up
another clue its a software issue is because the start up chime comes on which means the software has started to load and seeing as how the blue screen happens after the chime it must be a software issue, if it were to show up without the chime (like the colored vertical lines did in some macbooks my last one included) then it would most likely be a hardware issue
and also i called and talked to a MacBook product specialist for about an hour and he to came to the conclusion this was a software issue
-eric

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