I’m splitting this post into two parts because the forum won't let me upload more than nine images at once! :P... Anyway, I have been googling everything under the sun—honestly, I am still googling right now—trying desperately to salvage whatever I can from this mess. So far, I’ve tried using Acronis True Image and Disk Management, but neither of them helped at all. I even gave EaseUS Partition Master a shot, but that's just as useless; it only detects a single drive, which is just my internal one where Windows is installed...

But why on earth won't it show up right here, inside the Partition Recovery Wizard...

And once I select that offered WD drive and click Next, this pops up:

Now I’ve reached the stage where I should be selecting files to move forward, but unfortunately, there simply aren't any files to choose from... It’s just a total dead end. EaseUS Partition Master isn't making any headway at all. Even EasyBCD won't recognize anything! On the other hand, HDD Regenerator actually did detect it, but the moment I clicked to start the repair process, it immediately flagged that the Master Boot Record is missing. Then, it just displayed "Wait please" and my entire computer completely froze up on me... I had no choice but to perform a hard restart because nothing was responding. At this point, I am honestly at a loss as to what else to try or which direction to take. I did happen to google some solutions, and it suggested that performing a BIOS update might be a good idea since my current BIOS is quite outdated. There are three new updates listed on the Asus website, but all three are still in beta... Since I'm currently running the last stable version for my motherboard, I'm really hesitant to touch them; I'm terrified those beta versions might cause more harm than good. Plus, truth be told, I have never attempted a BIOS update before, so the thought of something going wrong during the process is quite daunting...
I’m starting to suspect that the Master Boot might have gone missing, or—heaven forbid—the entire drive itself has finally given up the ghost... though I’m still holding onto a tiny shred of hope that there might be some way to save it! 🙂 Does anyone here have experience with this kind of issue, or maybe someone has run into something similar recently? I would truly appreciate any insight or guidance you could offer. Any suggestion at all is more than welcome... Thanks so much!
Oh, I almost forgot to mention one more thing! I actually have another external WD drive at home—it's a 2 TB model—and it works perfectly fine whenever I plug it into my computer. I’ve tried using the cable from that first drive, and then I tried its own original cable too... but it works just fine either way. On the other hand, this 500 GB one won't respond to any of them. It's exactly like what I described before; no matter which cable I plug into it, nothing happens. So, I'm pretty convinced it isn't a cable issue...