I have a mid 2009 MacBook that I have had some trouble with. First of all, It just stop working and I replaced the optic board and installed 2 2mb ram that I have used before and works great. Upon completing, the laptop shuts down or goes to sleep when the top is closed and does not come back on. If you hold down the power button until it clicks and press it again it will reboot. The SIL does not come on anymore at all. Can anyone help with this. Thanks.