Read-only SSD 540 m.2

Hi,

I got at my work 10 Intel NUC 615 SYH with Intel SSD 540 m.2 and Windows 10

From some weeks ago, 3 of them run into problems.

Windows 10 doesnt boot and Linux run from USB can read almost all the data but cannot write on SSD

(deleting partitions failed, formating partitions failed, writing zeros on disk - dd if=/dev/zero of=/dev/sda - failed).

All failures show in dmesg like "failed command: write dma".

This is what smartctl command reported on one of them:

ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE

  5 Reallocated_Sector_Ct   0x0032   100   100   000    Old_age   Always       -       393

  9 Power_On_Hours_and_Msec 0x0032   100   100   000    Old_age   Always       -       85h+00m+00.000s

12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       274

170 Available_Reservd_Space 0x0033   078   078   010    Pre-fail  Always       -       0

171 Program_Fail_Count      0x0032   100   100   010    Old_age   Always       -       0

172 Erase_Fail_Count        0x0032   100   100   010    Old_age   Always       -       0

174 Unexpect_Power_Loss_Ct  0x0032   100   100   000    Old_age   Always       -       46

183 SATA_Downshift_Count    0x0032   100   100   000    Old_age   Always       -       4

184 End-to-End_Error        0x0033   100   100   090    Pre-fail  Always       -       0

187 Uncorrectable_Error_Cnt 0x0032   100   100   000    Old_age   Always       -       115

190 Airflow_Temperature_Cel 0x0032   036   038   000    Old_age   Always       -       36 (Min/Max 15/38)

192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       46

199 UDMA_CRC_Error_Count    0x0032   100   100   000    Old_age   Always       -       0

225 Host_Writes_32MiB       0x0032   100   100   000    Old_age   Always       -       52488

226 Workld_Media_Wear_Indic 0x0032   100   100   000    Old_age   Always       -       0

227 Workld_Host_Reads_Perc  0x0032   100   100   000    Old_age   Always       -       0

228 Workload_Minutes        0x0032   100   100   000    Old_age   Always       -       0

232 Available_Reservd_Space 0x0033   078   078   010    Pre-fail  Always       -       0

233 Media_Wearout_Indicator 0x0032   098   098   000    Old_age   Always       -       0

241 Total_LBAs_Written      0x0032   100   100   000    Old_age   Always       -       52488

242 Total_LBAs_Read         0x0032   100   100   000    Old_age   Always       -       31938

249 NAND_Writes_1GiB        0x0032   100   100   000    Old_age   Always       -       960

252 Unknown_Attribute       0x0032   100   100   000    Old_age   Always       -       15

SMART Error Log Version: 1

No Errors Logged

I updated both NUC and SSD to latest firmware, but no improvement occured.

I cannot send the SSDs to service (they are covered with 5 year guarantee) because of confidentiality of data stored on them.

What can I do?