MacBook Pro 17" Unable to re-install OS from DVD

MacBook Pro 17" (2007 model # A1212 / MA611LL/A), was experiencing some difficulty printing, so i tried rebooting.... Mac did not boot - got as far as the Grey screen with Apple Logo, and the circling "clock" - inserted the Leopard DVD to run Disc Utilities - Permission Repair failed immediately... Ran Disc Repair, fixed a few things, then ran it again, everything appears ok. tried permission repair again, failed immediately again. tried reinstalling OS 10.5 - installation failed early on in the process - about 1/4" into the progress bar. Tried again, same. shut down overnite tried again in morning, same result.
Ejected the Leopard DVD and inserted Install Disc 1 from original Tiger 10.4 CDs, held down "D" to access the Apple Hardware Test, ran the "Perform Extended Testing" - took 14 minutes, and results - No Problems. so must be software related, but i cannot reinstall the software?

Despite the results of the AHT, I am wondering if your hard drive may be on its way out. When you boot from a disc and go to Disk Utility, is the S.M.A.R.T. status verified? Even if it is, that may not be trustworthy. The average useful life of a hard drive is 3-5 years, and since I believe your Mac is from 2006 or 2007, your drive would be in this range.
At this point, I gather you have backed up all your information and there is nothing left on the drive that you need to save?
One thing you could try is to boot from your Leopard install disc and then erase and reformat the drive. Here is a link to Kappy's Extended Hard Drive Preparation which might be helpful:
http://discussions.apple.com/thread.jspa?threadID=1885474&tstart=60
If you can erase and reformat the drive, you can try once again to install Leopard from disc.
If you succeed, here is a utility that you can use to check out the physical health of your hard drive:
http://www.versiontracker.com/dyn/moreinfo/macosx/32454
You can download the demo and run it several times for free.
Good luck!

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