I have power mac g5 with OS X10.3.9 but i cannot upgrade to 10.4

I have a power mac G5 1.8ghz with 2.25GB of ram and 160GB HD. It works fine on 10.3.9 but unfortunately this is no good for me. I am trying to upfate to 10.4 but all this does is restart the computer back to the desktop.
All I am doing is double clicking the install icon on the disk and then pressing restart then entering my password. I have tried booting from thge disk but the same happens. I have also tried pressing the options key whilst its restarting and nothing happens
Im at my wits end as its useless to me without a modern OS.
I have also tried pressing the apple icon and going to software update but all it tells me is that everything is upto date.
Any help would be appreciated, thanks

What version of Tiger 10.4 are you attempting to use?
If it is a gray-label, it likely won't work, as those are specific
to a computer model originally intended; a restore-install disc.
Usually these have identifiers on them for their intended Mac.
What numbers are on the Tiger disc? What Mac is it for?
The clock battery or PRAM battery should be replaced every
few years as they do not charge up. They are one-way. This
powers the parameter random access memory chip, where
settings for system function are stored.
The computer could use retail install DVD Leopard OS X 10.5.
This would be the best way to upgrade the OS X, unless you
happen to have a workable way to install OS 9.2.2 to use it
as Classic, to run older applications under Tiger OS X 10.4.11.
Good luck & happy computing!

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