Tried installing 10.5 Leopard - now I have trouble starting my computer?

[ignavilla]

I have a G4 10.4.11 and I tried installing my wife's Leopard 10.5. After I inserted the DVD the computer started the typical ''restart'' process. Once the computer turned into the installing screen, it informed me that I had to have a 10.5 version installed in order to install this version. At this point it only offered me two options... "continue" with the installation (which only led to the same message) and "cancel" which was the option I chose. Once I clicked on cancel, it offered me 2 sources to start my computer on... the DVD and OSX (which had the mac classic icon on).... i clicked OSX.

Now, every time I turn on my computer I see the following icon flashing on a grey screen for about 3 minutes:
http://www.flickr.com/photos/29505518@N04/2756376031/

Followed by these 2 folder icons also flashing after the other for another 2 minutes:
http://www.flickr.com/photos/2950551...n/photostream/
http://www.flickr.com/photos/2950551...n/photostream/


Please help!!!

Also my mac has been freezing up a lot during the past month... I have to pull the plug out... I added 2 memory cards a while back each 256mb but apparently didn't make a difference... any tips on how can I cleanse my computer out of hidden useless files that might be eating up the memory?

thanks..... your help will be appreciated!!!!

[Natobasso]

First, you shouldn't install your wife's os x on your computer for two reasons: Breaks the user agreement (unless you have a family license) and could be a device specific installation. Laptops come with laptop os x, towers come with tower os x, etc.

Also, you remove OS X to try to go back and your computer doesn't have anything to boot with! If you want to downgrade, just get a 10.4 install disk. If you choose it will erase the entire disk and install which is recommended unless you want to save the files on your computer.

Always back up your files before doing anything like this.