To start off, yesterday I plugged in my USB flash drive to my computer. As I turned my computer off, i forgot to pull it out. Hence when i turned on my computer again, it was turned on while the USB flash drive was still plugged to my computer.
I don't know if this issue is relevant but I have experienced problems before (even with my previous computers before), where the problems are caused by having an external device plugged in. I have had one plugged while the system is booting in an older computer and when I had booted, my internet couldn't connect.
In this case what happened today was I went to a black screen and the computer told me which device to use to boot. Seeing that I had my USB flash drive plugged in while i booted, it gave me the idea that my boot order isn't in order. So i just plugged out the USB stick and rebooted. The computer then returned to the same black screen where it asked which device to use to boot. I just rebooted a couple more times, then it booted and i came to the desktop.
After about 2-3 hours, I was running an application installed on my 2nd internal drive D (Not a windows application, just a video game). What happened was: The application that I was running, installed on drive D, crashed. When i tried to double click on the executable file it says "It is not a valid win32 application". When i tried to delete some temp file in it, it returned me an error "Cannot delete because there is an I/O error..." something along those lines. I then rebooted my computer.
After another 1-2 hours of running that same application again, the application crashed and i looked at my computer and my drive D was missing. It made me panic a bit but knowing my data could still be there, i just hoped for the best and rebooted my computer. Drive D reappeared and i was able to access/read/write my files.
After again another couple of hours using the application, it crashed again and drive D disappeared. I tried to listen the sounds of my computer and noticed there was this beeping sound whenever the application had crashed and my drive D disappeared from my computer.
What i am not sure though is if my hard disk drive is physically damaged? or was it caused by the USB flash drive and the wrong boot order? (I haven't touched the boot order at all)? As of now I am already backing up my data in Drive D just in case. The way that I have replicated the problem so far is by using the application for some time and then alt+tabbing. It hasn't happened before, it had only happened now. The Drive D also doesn't seem to be considerably sluggish. I have not heard any clicking or beeping sounds from my computer before the USB flash drive incident, so the nearest culprit I could trace back is having a USB device connected.
My case could be similar to GregP (Late Poster) before in this thread, where his device vanished because of an external device plugged in.
Am looking to see if this can be fixed in the software side of things if I can. Installing all the applications on a new replacement drive is a bit tedious and time consuming for me
My 2nd Internal Drive D is a 931GB Seagate ST10000DM003 SATA