Hi Guys,

Hope you can help me!

My main desktop PC has two Samsung SSD 840 PRO 256GB (MZ7PD256) running in RAID 0. Today I had a power failure whilst the computer was on and when the power was restored, the computer could no longer boot. Checking the BIOS, I noticed that only one of the 840 PRO's was being detected. I've removed the failed SSD from the computer and tested it with a USB to SATA adapter on another computer but it's still not being detected.

Apart from taking the SSD to a data recovery centre, do I have any other options I could try to get it working again. Is it possible that the firmware could have become corrupt and I could try flashing it similar to the technique in this post -https://forums.tomshardware.com/threads/samsung-850-pro-ssd-corrupted-firmware-fix-read-first.2193040/ ?

Thanks in advance for any assistance you can offer.

Cheers

If you wanna try that method, save byte-to-byte image first from donor ssd, just in case.

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Angel Data Recovery

Thanks for your reply, DR-Kiev however, I wasn't able to get it to take the firmware when I hot swapped over to the faulty SSD.

Is there any easy way to determine if the SSD is powering on? I'm starting to think that some of the components might have been damaged either when the power went out or came back on. I assume that if I measure 5v around the controller IC then that's going to be the best way of telling?

FWIW, the voltage test points for the 840 Evo are in @sourcerer's "Missing Manual":

http://www2.futureware.at/~philipp/ssd/TheMissingManual.pdf

If you need specific help with your Pro SSD, please provide detailed photos of both sides of the PCB.

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A backup a day keeps DR away.

Thank you, fzabkar. I appreciate any advice you can suggest. Photos of both sides of the PCB are below.

The voltage test points are marked in the attachments.

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A backup a day keeps DR away.