After a laptop started having issues booting Windows 7, I ran its built-in diagnostics and it reported the factory installed SSD failed the short DST test. I cloned the SSD to a brand new SSD (old SSD to disk image, disk image to new SSD), but continued to have booting issues. I assume whatever hardware failure the old SSD had had corrupted some system files, I tried to isolate which ones with little to no luck, but somehow managed to get Windows Update to install the free Windows 10 upgrade. The laptop now boots reliably and runs beautifully with the new SSD and new Windows 10 installation (I assume it's because Windows 10 carries over little to no Windows 7 system files). Curiosity got the best of me so I cloned the new SSD to the old SSD (via a dual bay SATA to USB duplicator dock), popped the old SSD back in the laptop and low and behold it now passes the short and long DST test... any explanation on why it now passes?
P.S. - The old SSD also passed the short DST test in HD Sentinel.
P.S. - The old SSD also passed the short DST test in HD Sentinel.