Christina, I do agree with Dan if you are not comfortable to work on your own computer. There are a few things you could do yourself. One would be to to make sure that your AC adapter works. After that, check to see if you get power to your I/O board. Use [https://www.ifixit.com/Device/MacBook_Air_11%22_Late_2010#guideList|these guides] to work on your computer.