Boot device not found 3FO cannot find os partition

[Alainkeyrouz]

Suddenly while starting my omen laptop I receive the message boot device not found 

I tried almost everything written on this site 

Using minitool partition wizard I found out that my os partition (C) is not seen anywhere while I can see D partition and recovery partition. 

Is it possible that c just suddenly disappeared? And how come I see other partitions from same hard disk? Any chance to get it back? Am I supposed to simply change my whole hard disk?

Pls help

By the way I'm not very expert 

Thx 

[WAWood · Accepted solution]

@Alainkeyrouz 

Without knowing the specific model of the Omen laptop, my guess would be that it has two physical "disks" -- and SSD (to hold the OS files) and an HDD (to hold everything else).

If MTPW is only showing the HDD, that implies that your SSD has crashed -- and if that is the case, you would have to get it replaced, and if this is one of the models that has a sealed case, that is a very difficult thing to do without doing serious damage, which then would not be covered by the warranty.

[Alainkeyrouz]

Yep that's actually what happened. 

Well I decided to open up my laptop from the back and found out that some cables connecting the hard disk were little loose so i simply adjusted them (very carefully) and suddenly everything worked out well so it WAS actually a hardware issue as you mentioned.

Anyway thanks a lot.

Regards