In the project panel, choose replace footage and select the original file. That will relink them and will update the file location.
While you are at it, modify your laptop to meet at least minimum requirements: a DEDICATED physical 7200 RPM SATA disk for your media.
The project would either load up about 95%, then crash, or would open, but it couldn't find all or most of my video files, so I got the "Where is" dialog box. I located some of them, but I have 150 or so video cips, so it was tedious. After a while, I clicked Work Offline for the rest and went into the project without difficulty and the files I had linked to where there and were fine.
Once you have done a Save (overwriting your PRPROJ file) with the media listed as Off-Line, you will now have to manually re-link each Asset.
Unless your Assets were spread around multiple folders, doing the linking, when Opening the Project is really pretty easy, as PrPro is smart enough to look in each folder, when you Find the first Asset in that folder, and gather the links for all other Assets in that folder. Repeat, for each folder, until done.
When I wish to do work Off-Line, I will ALWAYS do a Save_As, or Save_As_a_Copy, and NEVER a Save. This ARTICLE will give you tips on the differences, plus some background on the PRPROJ files.
Thanks, everyone. I have a little more perspective now.
While I was working in the "where is" dialog box, I did find one file that the program wouldn't recognize. I'm pretty sure it became corrupt because of the defective hard drive. I believe I will just have to remove that one, and maybe also search for others and replade them. And not close the program until everything has been linked. Anyway, thanks a lot.