A1278 Unibody MacBook Reboot Cycle/Start up Issue

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Greetings! *This is my first post and I would appriciate any help with this issue. *I just replaced the logic board in a Unibody MacBook A1278 and I am having some reboot issues. *The MacBook was originally a client's unit that was abandoned and was damaged by water. *Most of the components on the logic board were damaged or corroded so I replaced the logic board with a new one. *I have also upgraded the hard drive with a WD 750GB 7200 because the client requested the hard drive.

Currently, the MacBook does boot up to a white screen and has the question mark folder icon, which is expected, in the middle of the screen because it has no operating system. *All components check out, CPU fan spins, hard drive and SuperDrive spin up and the keyboard is working as expected. *The unit is also charging the battery for the MacBook fine through the mag port. *I performed a hardware reset on the system and formatted the hard drive to mac journaled before I started the OS install.

This is where the problem begins. *I put in the OS CD in the drive and hold down 'C' and nothing comes up but a white screen. *Still keeping my finger on "C" the unit then reboots and starts over again. *I can hear the CD drive spin up and searching and then it reboots. *Even without holding down the "C" button, the Mac does the same thing with the reboot. *I am going to only guess that the problem could ALSO be the Superdrive that is causing the issue. *I have yet to verify that as being the issue.

Any help or advice in clearing this issue would be greatly appreciated!
 

chscag

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Your Mac's Specs
2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
What OS CD are you using? Macs require either a retail version of OS X (Black with big X) or the exact DVD set that shipped with the machine. Any other boot disk will not work. Make sure you're using the correct media.
 
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Chscag, thanks for your response! I just found that out the hard way! I decided to take my girlfriend's hard drive out of her beloved MacBook (with a little resistance from her) and transplant it into my machine and everything worked fine.

I was using her restore disks to revive the new machine. Luckily I do have a full version of the OS (as you mentioned) with a 5 user license that I've only used twice. For some reason I did remember that I had some issues before with using a set of restore disks that were the wrong ones and I thought the machine was defective. Like using the wrong keys to try to start a car!

Thanks again!
 

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