HDD missing, only SDD visible

[ricky00130]

My HDD suddenly went missing after an unauthorised reboot, i don't know how it happened. I have been using both drives and the laptop I'm using is MSI GS60. I hope these following screenshots help the situation. I'm a newbie and have no clue whats going on.
Thank you guys

http://imageshack.com/a/img924/8907/TsRbeR.png
I believe this is the missing drive and the time shown is exactly when this event happened

http://imageshack.com/a/img921/9600/aEWYGG.png

http://imageshack.com/a/img922/373/13FJLs.png
I've tried using easeus but i couldnt find any options for me to continue on

http://imageshack.com/a/img923/3585/jdeu98.png
Again no option

 

[popatim]

If the bios cannot see the drive then the OS or recovery software likely won't either.
Is the bios detecting the drive?

 

[SuperSoph_WD]

Welcome to the TH forum, ricky00130!

Unfortunately, it seems like you might have corrupted the file system with this unauthorized reboot. 🙁 In your last screenshot, it looks like the HDD appears as uninitialized. This means that you'd need to re-initialize it and then partition & format it in order to be able to use and access the capacity through File Explorer/This PC.
Keep in mind that these procedures will basically erase everything you have on the HDD to the point of no return (if you overwrite the space with data). I'd strongly recommend you to turn to a professional data recovery company if you have anything important on that hard drive or refer to the laptop manufacturer's customer support for any file retrieving suggestions (in case the laptop is still under warranty).

You might also want to test the drive's health and SMART status using its brand-specific diagnostic tool or refer to some third-party testing tool suggestions from the community.

Keep us posted with the troubleshooting & Good luck!
SuperSoph_WD