I have a Macbook Pro 13.3" A1278 2.26 Ghz Intel Core 2 Duo,early 2009 model A1278 5.5.. UNIBODY.
It boots intermediately, sometimes a couple of attempts are needed. Also the keyboard And mouse are working intermediately.
Also,Blue-Tooth and Wifi are not working at all. The laptop was working fine but the issues developed over the last couple of weeks.`