Can't load Yosemite and can't access Disk Repair

I attempted to load Yosemite. I got the error message indicating verification failed, etc. I understand Apple wrote in code to prohibit successful loading of Yosemite if there were problems with the harddrive, and upon using disk utility, I get the "This disk needs to be repaired. Click Repair Disk" message. But the Repair Disk button won't highlight and thus won't allow me to repair the disc.
I have also tried to boot up using the OS x base system install disc that came with the macbook pro, but installation fails there as well. I am caught in an endless loop.
I backed up the machine recently and am not too concerned about the things I would lose if that is the way it has to be, but would like to retain the info if possible.
Can anyone offer any advice? Thanks in advance

Hi czarnicj,
Welcome to the Apple Support Communities!
I know this type of situation can be very frustrating. To repair the disk you will need to start your computer using OS X Recovery. Please use the attached article for information and steps to start in recovery and repair your disk.
OS X: About OS X Recovery
Have a great day,
Joe

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From:
namohamm
To:
Simon Vyrdal/Sweden/Contr/IBM@IBMSE
Date:
2010-12-30 08:29
Subject:
New message: "Tool like PathPing that can pinpoint
packet loss and can be configured to run for 24 hours"
simonvyrdal,
A new message was posted in the Discussion thread "Tool like PathPing that
can pinpoint packet loss and can be configured to run for 24 hours":
https://supportforums.cisco.com/message/3258861#3258861
Author : Nael Mohammad
Profile : https://supportforums.cisco.com/people/namohamm
Message:

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Can't load Yosemite and can't access Disk Repair

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