How to fix the computer not seeing hard drives during or after startup?

Question

Iron

Everything was fine for 3 years, then, suddenly, the computer stopped seeing hard drives. After some time of rest, he again began to see hard drives, but a few minutes after starting the OS, he again stopped seeing them, even if they were not mounted.

Answer 1

No way. The controller on the hard drive or motherboard dies. In any case, it is recommended to remove all important information. Then replace one hard. If the situation persists, the problem is with other hardware. If not, then in the disks.

Answer 2

It is urgent to take information from disks, I had it on a 1Tb barracuda screw. I tried to restore, fix the broken sectors - so the information remained on it ...