Prior to contacting you I did a thorough chkdsk /f /r of c:
sfc seemed not affected, stopped again @ 18%
GsmartControl: (tried with updated driver dB)
Drive C: [does not] show. "Unknown Model"
Dbl click = "Non additional information is available for this device"
Show output is:
smartctl 6.6 2017-11-05 r4594 [i686-w64-mingw32-w10(64)-b17763] (sf-6.6-1)
Copyright (C) 2002-17, Bruce Allen, Christian Franke,
smartmontools
=== START OF INFORMATION SECTION ===
Model Number: Samsung SSD 960 EVO 500GB
Serial Number: S3EUNX0HC01205J
Firmware Version: 3B7QCXE7
PCI Vendor/Subsystem ID: 0x144d
IEEE OUI Identifier: 0x002538
Total NVM Capacity: 500,107,862,016 [500 GB]
Unallocated NVM Capacity: 0
Controller ID: 2
Number of Namespaces: 1
Namespace 1 Size/Capacity: 500,107,862,016 [500 GB]
Namespace 1 Utilization: 182,946,406,400 [182 GB]
Namespace 1 Formatted LBA Size: 512
Namespace 1 IEEE EUI-64: 002538 5c61b01126
Local Time is: Fri Jan 25 13:01:26 2019 PST
Firmware Updates (0x16): 3 Slots, no Reset required
Optional Admin Commands (0x0007): Security Format Frmw_DL
Optional NVM Commands (0x001f): Comp Wr_Unc DS_Mngmt Wr_Zero Sav/Sel_Feat
Maximum Data Transfer Size: 512 Pages
Warning Comp. Temp. Threshold: 77 Celsius
Critical Comp. Temp. Threshold: 79 Celsius
Supported Power States
St Op Max Active Idle RL RT WL WT Ent_Lat Ex_Lat
0 + 6.04W - - 0 0 0 0 0 0
1 + 5.09W - - 1 1 1 1 0 0
2 + 4.08W - - 2 2 2 2 0 0
3 - 0.0400W - - 3 3 3 3 210 1500
4 - 0.0050W - - 4 4 4 4 2200 6000
Supported LBA Sizes (NSID 0x1)
Id Fmt Data Metadt Rel_Perf
0 + 512 0 0
=== START OF SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
Another app I have, HD Sentinel, shows this: