G4 MDD Dual 876 MHZ won´t boot

[FB-01Freak]

Hi there,
my old G4 MDD won´t boot. If I switch the computer on, I can see grey and an apple, then there is onlx black screen. What could it be?

[IIO]

a corrupted OSX system folder.

is the screen really black? or is there a insert mark. if yes, try typing "/login" to boot into darwin. you should then either get into OSX or at least get an error message.

i would also remove all PCI cards and reset PRAM.

[supernova777]

grab a new 80gb drive at your local store for 20$
and do a clean install

[Graveyard]

First of all, try reinstalling the OS. If that fails, then think about getting a new hdd.