Hard drive issues

Hey everyone,

I’ve been digging through endless threads online trying to figure this out, but honestly, I’m still stuck in the dark—so if anyone has any insight, I’d really appreciate some advice here.

Here’s the deal: my laptop was working fine, then suddenly—bam—just a black screen. If I hit the power button, it shuts down immediately, but when I try to reboot, nothing happens except for a blinking cursor in the top left corner after about two seconds. Just total darkness.

I can get into the BIOS just fine, but there isn't anything in there that actually helps me fix the issue. So, I pulled the drive out of the laptop and popped it into a USB enclosure to see what would happen. After messing around with it for a bit, the computer finally recognizes that a drive is connected via USB—Device Manager sees it, which is a start—but then Disk Management shows absolutely nothing. To make matters worse, whenever I try to open the drive in This PC to see if my files are even still there, the whole system just freezes up completely. The only way to get the computer back to normal is to unplug the USB.

So, I've got a couple of questions:
1. Do you think we're looking at a failure in the drive's controller board?
2. Or is this more likely a mechanical failure—like the platters aren't spinning or something, making it impossible to read data?

When I hold it close to listen, I can't tell for sure if it's spinning... it definitely doesn't make that familiar whirring sound it used to make inside the laptop during startup and data access. It's just... quiet.

I actually thought about trying to source a replacement PCB for the drive, but I saw a similar one on eBay for about $100... and frankly, I don't want to be stupid and throw money away if it won't work. What should I do?

The drive is an ST500DM002

I’m fairly certain this drive has finally kicked the bucket, and honestly, it’s time to swap it out. For the amount you're looking at, you could probably find a decent used one, though if I were in your shoes, I'd just bite the bullet and buy a brand-new drive. At the very least, my recommendation is to try to track down a working spare just to plug it in; we need to rule out the possibility that something else is causing the headache. Given that you mentioned the laptop starts freezing up the moment you connect it, I’m quite convinced the issue lies squarely within the hard drive itself. If you really want to play detective, the only other thing you could attempt is bypassing the external enclosure entirely and connecting it directly to the motherboard via a SATA cable. If the system still acts up, then yeah, it’s dead—just toss it and move on.
And do yourself a favor and install Hard Disk Sentinel on your PC; you should be able to get a clear reading on the drive's actual health status without even having to crack the case open.

Christian Thompson11 said:A couple of questions here:
1. Do you think the issue is with the drive's circuit board?
2. Could this be a mechanical failure—like, maybe the drive isn't spinning at all, making it impossible to read data?

1. Based on the symptoms you described, it’s very likely the electronics.
2. It’s not impossible, I guess, but mechanical failures aren't actually that common. Usually, if there's a mechanical issue, the read/write head crashes onto the platter—you'd hear some grinding sounds, and then the drive is basically toast. Actual rotor issues are pretty rare.

How important is the data on this drive? If it's not critical, personally, I wouldn't bother replacing the PCB since there's no guarantee it'll fix everything. But if the data is vital... well, professional data recovery services are incredibly expensive, so maybe attempting a fix with the electronics could be an option.

Does it make this high-pitched whistling sound when the drive is actually spinning up?
Because if you’re hearing that, the head probably scraped right across the platter and the whole thing is toast.
Also, does it get even slightly warm when it's running? If it stays cold, it's officially dead.

It’s the usual stuff... just some photos and various documents that carry some emotional weight, you know?

Don't make too much noise—it's actually incredibly quiet. That’s why I started thinking maybe the fan isn't spinning, or like, something inside is totally jammed up...

I'm starting to suspect that...

A buddy of mine who lives and breathes computer hardware is going to take a look at it tomorrow. If he can't figure it out, I'll just hunt down a replacement part online if I can find a match for this specific model somewhere.

Thanks for the input, everyone.