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I had Samsung 860 EVO 250Gb SSD installed on my PC, probably for more than 1 year. I run Windows 10. It worked just fine. There was no errors, read/write speed was consistent.

One week ago, I booted my PC and "Reboot and Select proper boot device" error appeared. I booted from Debian live DVD, and it was throwing SError: { UnrecovData 10B8B BadCRC } during boot. I tried reconnecting my SSD and checking cables, and it worked. I forgot about it until yesterday. This error has appeared again.

I tried plugging it into another sata port, changing cables, nothing helped. Linux was throwing the same error. And when I connected this drive to another PC running linux, everything worked just fine, there were no errors, I could read data and when I brought it back to the PC where it had errors, it just booted up. But when I rebooted it once again, this error was back.

I didn't install any new hardware, nor changed any BIOS settings.

What could be wrong? Is my SSD or motherboard faulty or something wrong with my Windows setup? I have a spare motherboard, so I could try replacing it.

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  • Try another SATA cable. Make sure there is no strain on either end of the plugs/sockets.
    – Tetsujin
    Dec 15, 2020 at 11:43
  • @Tetsujin I'm 98% sure that the problem isn't in the cable, because I've tried another one and there was the same issue, but SSD also worked on another pc with the same cable.
    – Lowder
    Dec 15, 2020 at 11:48
  • If the live DVD is affected too, then it's not the drive. Have a memtest86 drive at hand and run it when the issue comes back.
    – gronostaj
    Dec 15, 2020 at 11:51
  • @gronostaj Hmm, I thought that live DVD was throwing errors because it tried to mount my SSD.
    – Lowder
    Dec 15, 2020 at 11:54
  • @Lowder It shouldn't mount it on boot, and even if it did for some reason it should fail gracefully. No reason to halt the boot on a non-critical error.
    – gronostaj
    Dec 15, 2020 at 12:03

2 Answers 2

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Thanks, everyone! I finally fixed it! The problem wasn't in my hardware. My SSD and motherboard are working properly now. I managed to fix it by rebuilding BCD from the live DVD. https://support.microsoft.com/ru-ru/help/927392/use-bootrec-exe-in-the-windows-re-to-troubleshoot-startup-issues

bootrec /FixMbr
bootrec /FixBoot
bootrec /RebuildBcd
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Have a look at the "SMART" attributes of your ssd , using gnome disk or crystal disk(windows).See if you have any attributes that have been exceeded .There is a firmware for the 860EVO on samsung's site which you could try ,but it may reduce performance from initial reports.

Also check your psu , if its old it might be sending extra ripple down the 12v ,5v and 3.3v lines.The SSD being a microchip is very sensitive to bad voltage, and unstable voltage can lockup chips or change their behaviour to act strange.

Also check your memory , if your ram is going bad(general system instability).

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