v7 keep rebooting

[vidyamantra]

I am trying to test memory on supermicro FatTwin F627R3-R72B+. When booting in UEFI mode (v7), it starts but after few minutes of showing few lines, it automatically reboots.
On booting in legacy mode (v4) it seems to be working fine. Anything I could do to make V7 work?

[David (PassMark)]

Check if any BIOS updates are available for the motherboard to start with. It might be a UEFI firmware bug.

Are you running MemTest86 because you suspect there is a hardware fault in the machine? (what are the symptoms)?