How to fix MacBook A1342 stuck on apple logo?

This issue can be caused by either a corrupt operating system OR a problem with your hard drive. You can try booting to the install disc that came with your computer and then using disk utility to verify the hard drive. Ultimately, if you rather not tinker with it I would suggest having a technician diagnose it. I can tell you that the issue is likely either a corrupt operating system OR a failing hard drive. Hope this helps! Please feel free to ask anymore questions you may have.