HDD replaced
10/5/2017: Western Digital WD Blue 1T B WD10EZEX was delivered overnight by PCCASEGEAR. Using Acronis Rescue Media, I cloned the failing HDD to the new HDD. Process took about 2 hours. Once done, I did another Parkdale test; result is good: Important note: when using Acronis Rescue Media, make sure that 'iGPU Multi-Monitor' is DISABLED in your motherboard BIOS. Otherwise, you'll be staring at a blank screen forever.