Before buying anything, try to verify hardware.
Try a safe boot.
Shutdown your machine. Hold down the shift key. Poweron. Wait awhile Wait awhile while you harddrive
is being checked.
http://support.apple.com/kb/ht1455
Try holding down the option key then power on. This brings up the startup manager. Click on your hd. Click on right arrow key. [ You should at least get the startup manager. ]
This should work.
Sometimes if volumes don't appear in Startup Manager (what you get when you hold down the Option key at startup), you need to reset the Mac's PRAM, NVRAM, and Open Firmware. Shut down the Mac, then power it up, and before the screen lights up, quickly hold down the Command, Option, P, and R keys, until the Mac has chimed twice more after the powerup chime. Then, before the screen lights up, hold down Command-Option-O-F until the Open Firmware screen appears. Then enter these lines, pressing Return after each one:
reset-nvram
set-defaults
reset-all
"The reset-all command should restart your Mac. If so, you have successfully reset the Open Firmware settings."
http://support.apple.com/kb/TS1812?viewlocale=en_US
How to eject a cd from the internal cd drive:
eject cd
List of devices:
devalias
List of variables:
printenv
( nvram is the equivalent Mac OS X terminal command. )
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Resetting your Mac's PRAM and NVRAM
http://support.apple.com/kb/HT1379
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reset the PMU
http://mrjcd.com/junk/PMU.jpg
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Don't get your hopes up, but ocasional Apple seems to find a few discs in a back closet.
Apple may still supply the original restore CDs/DVDs for a nominal fee. Have your serial number and model information available when you call them. You do not have to be the original owner.
AppleCare Support Phone Number: 1-800-275-2273
open 6am to 6pm Pacific Time
Apple Phone Sales 1-800-692-7753
International Technical Support Numbers
http://www.apple.com/support/contact/phone_contacts.html
"You have to call Apple & likely ask for a Product Specialist to get it (Leopard), if they still have it... helps if you tell them you have a new iPhone (iPad) that needs it!"
BDAqua
Requirements for Mac OS X v10.5
http://support.apple.com/kb/HT3759