(for all those who are trying me out with my here is what is going on with it)
1. no longer have a password
2.no buttons work on the keyboard unless it is the letters and numbers
3. my brightness and sound won't work unless go into system preferences to fix it.

what is wrong they say i may have fried it but i don't understand

Need asap write a short paper describing the history and differences between six sigma, waterfall, agile, and scrum models. understanding these models can give you a good idea of how diverse and interesting it development projects can be. describe what the rationale for them is and describe their key features. describe the history behind their development. at least 400 words