The white screen indicates to me a failed hard drive. Disconnect the hard drive and see if it will boot from the original DVD. If you do not have an original system DVD (this machine shipped with 10.3.3) Apple may be able to replace it for $16 plus shipping an tax. If you are trying to use a gray DVD from another machine, those are machine specific and will not work. A 10.3, 10.4 or 10.5 retail system installation disk will work on your machine.
+
Please check this out before spending a lot of money.
The white screen indicates to me a failed hard drive. Disconnect the hard drive and see if it will boot from the original DVD. If you do not have an original system DVD (this machine shipped with 10.3.3) Apple may be able to replace it for $16 plus shipping an tax. If you are trying to use a gray DVD from another machine, those are machine specific and will not work. A 10.3, 10.4 or 10.5 retail system installation disk will work on your machine.