Powering on and off

I have had this issue for a while now. Sometimes when I close my MBP and it goes to sleep and then open it back up the screen, mousepad and keyboard are unresponsive but the fan is still running. I took it to the genius bar and they suggested a full uninstall and install of apps. Could this be a hardware issue? I cannot turn on my MBP right now. Suggestions? I have the MBP 2.16 GHZ Core 2 Duo 2nd generation MBP.

You might try a SMC reset first:
http://support.apple.com/kb/HT1411?viewlocale=en_US
Good luck!

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