This is not a warranty question.
I was reinstalling W-7 on a well-used DH67CL / i5-2500K system. On three different drives connected to the SATA III port, two SSDs and a Black Caviar HDD, the installation failed with a chkdisk after the first auto-reboot, though no errors were found. I thought: "OH NO! IT'S THE INFAMOUS DH67 CHIPSET BUG!" I tried once more with a laptop HDD -- and it was able to install.
Okay, so the original DH67 bug involved the SATA II ports.
I still had a working W-8.1 system on a different drive, so I ran memtest and IPDT, but neither showed any errors.
After wondering if I should dump the motherboard and build a newer system, I pulled both RAM sticks (Crucial Tactical Ballistix DDR3-1333 4GB) and substituted a single SK hynix 2GB that I keep only for debugging. Eureka! I was able to install on the Black HDD. Then I replaced the SK hynix stick with two spare Crucial Tactical Ballistix DDR3-1333 4GB sticks and everything went back to normal.
That's just weird. Has anyone else seen a chkdsk due to memory failure? Also, what's up with the laptop HDD working when nothing else did? Maybe since it is slower than the others it put less stress on the system, but it's a Black Scorpio with 16MB of cache so it's not that much slower than the Black Caviar with 32MB.