I Don't have a lot of knowledge of computers so I apologize if any of this doesn't make sense. I have an exactly 2 year old White Macbook. To make it short....screen froze....restarted...eventually got blinking folder with question mark. Tried all the various ways/modes (safe,single,etc) to restart the computer and nothing. Read the macbook booklet and it said to enter the Mac OS X disk 1 and I did that. It eventually worked, the disk that is. Went to Disk Utility and tried to repair Mac OS X Install Disc 1 and get ERROR:No valid packages. In the column of choices there are 3 other options for me to click and repair. I don't know if these options are confidential and need to be kept private but I will omit some of the numbers/ letters. These are the other 3 options: ....GB Hitachi HTS....( this is what I get when I try to repair: Invalid B-tree node size Error: The underlying task reported failure on exit......also.. 1 HFS Volume checked .....Volume needs repair Disk0s2 ......this option when I try to repair gives the same exact error as the one above. ....GB MATSHITA.... this option gives the same response as when I try to repair the Mac OS X Install Disc 1 ......ERROR:No valid packages. Also I tried to reinstall Mac OS X by following the installer and clicked English and then get to Select a destination volume to install the Mac OS X software and there are NO options available for me to click. I am so desperate right now. If anyone has any advice or knows what to do I would be soooo grateful!