I've found out that my late 09 iMac has a bad graphics card and logic board and the cost of repairs would exceed the cost of buying a new one. The computer works, but only in safe mode. Now I'm debating what to do with my old mac. I'd like to sell it and I know you can use an iMac as just a monitor but I'm not sure if that's an option if the graphics card and logic board are messed up. I'm also wondering how I can delete all my personal info and reinstall the OS if I can only boot up the iMac in safe mode. Any advice?