Hello, First off I want to say I have owned my MacBook for a little over a year and have never had any problems. Today I woke up and went on my Macbook and I noticed there were 3 new updates. I did not have enough memory and I had already deleted some games in the past to do updates. Well I downloaded Windows XP Home about half a year ago and decided I really did not use it all that much. When I downloaded It i cut the memory in half (1/2 OS X and 1/2 Windows XP) So I went back to my Bootcamp installation papers to see how to properly uninstall Windows. So I did and everything seemed fine the only thing I thought was odd is that it only took like 3 seconds to uninstall so i knew it did not actually uninstall. I did not think much of it cause I could now download the update. So I downloaded the updates and the system rebooted and after the light blue screen went away a black screen came up that said "No bootable device -- Insert boot disk and press any key" So I tried the OS X disc. It did nothing. I put in the Windows XP disc it poped up a blue downloadng screen for windows XP after a little bit it said WIndows was already installed. I then clicked on file C: and uninstalled it. again it went fast so I was confused. I then quit it and It then popped up "error loading operating system" So I was getting worried. I am now stuck here and nothing works only the power button. When i reboot the light blue screen comes up and then that message and I cannot do anything. Please please please help me! I really need to get this fixed because I am doing online school so I need the laptop for it! Thank you so much everyone!