So about two weeks ago, my computer started slowing down pretty much any time I would try to access any file or launch almost any program. Then it started freezing on me to the point where I would have to do a hard reset. After the fourth reset, windows just wouldn't boot anymore, not normally, not in safe mode, nothing. Then I checked my BIOS and my hard drive wasn't being recognized anymore. Opened up the case and noticed that the hard drive was making an odd sound, not really a click, but more of a studder just over and over.
The drive is a Seagate 1TB and I've had it for about 2 and a half years now. I built a new system in December (new mobo and CPU) and have never had any problems with the hard drive until now. Anyway I tried using a USB to SATA cable and I also tried hooking up the drive to a friend's computer, but neither worked. I can still hear the drive spinning so it is getting power. So I just recently got a new Western Digital drive and I've installed Windows on that, no problems. But now I'm trying to find out if it's possible to get the data from the old drive. I hooked up the old drive to my now working computer and the hard drive was recognized again in BIOS, but not in my disk management in Windows.
Now, my old drive had just one partition with the boot files and all of my data on it. Is this the reason I can't access it on a running system that already has a working drive running Windows? Or is it because there is possible physical damage inside the drive? Like I said, the drive IS being recognized by BIOS, but not Windows.
Running Windows 7 Professional 64-Bit and my motherboard is an ASRock Z77 Extreme6 if that is helpful at all.
You should be able to access a secondary drive no problem, even if it has an OS installed on it. So it's very likely the drive has failed but to be sure you can test it with Seagate SeaTools for Windows (if it's able to find the drive): http://www.seagate.com/support/downloads/item/seatools-...
You should have backed up your data while that drive was working okay. Not doing so was very unwise.