I've built two similar Hyper-V servers. One is OK but other Windows Hyper-V Core fails in 1~4 days (BSODs with different reasons).
The only different parts are CPU & RAM. Now I'm testing the failed server with MemTest86+ and got an error;
Test:8 Pass: 0 ...etc Count: 1
Is this error fatal? There are 4 modules of 4GB RAMs without ECC.