As advised, I ran the GSmartControl again and seems to have provided the same results as the prior time I ran it. I posted what it showed below.
Clearly, I could be wrong on this (thinking I am getting the HD failure warning due to a bad sector) but given that I was getting the exact same thing even after installing a new hard drive, It just seemed unlikely that the new hard drive had a physical issue. I guess what I assumed is that since I installed a new HD but used an image created from the old one during the restore process, that it was due to a software error (corrupt file) related. That is why I ended up removing the new HD which I still have in the box and put back in the old one. This all took place back in 2015 when I originally requested help on this forum.
I am not sure if the posted screen shot and text file will tell you anything but I will wait to hear back before I try the HDD Regenerator. I also wanted to note that the laptop is working better post the fixes you provided. I have been utilizing the 'sleep' function rather than rebooting to avoid the long boot times and like I believe I posted earlier when coming out of the 'sleep' function, it is now responding pretty quickly. I do however have to continue to deal w/ the sporadic 'HD failure warning' pop-up which is what I am hoping the HDD Regenerator may be able to effect via I guess making alterations to the bad sector. I still can't figure out how/why this pop-up went away back in 2015 until it reappeared on January 9 of this year. Thanks for the help.