My cd drive suddenly couldn't insert disk after I've reject disk out. And my trackpad suddenly couldn't corner click. How am I able to solve this problem ?

Hi.
I need help. I've been using MacBook aluminum 13" for awhile and everything works perfectly. But just recently my disk couldn't be insert after I reject a DVD out. And my trackpad couldn't be coner click but the sensibility tap is all working? 
How could I solve this issue? And am I able to solve it myself or do I have to sent it to repair at Mac centre in singapore and how much would it cost?
Regards,
Jacob

Try SMC reset, followed by NVRAM reset.
Note there are two different procedures for SMC depending on whether or not you can remove the battery yourself.
SMC: http://support.apple.com/kb/ht3964
NVRAM: http://support.apple.com/kb/ht1379

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