My mac with os x 10.6.8 won't turn on

My mac 10.6.8 won't start up, any ideas on what to try?

It may be helpful if you identified the EXACT model MBP that you have.  Also provide more details, such as does it turn on, what type of display is shown (if any), etc.
Try SMC and PRAM resets:
http://support.apple.com/kb/ht3964
http://support.apple.com/kb/ht1379
Ciao.

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