It turned out the Corsair SSD HDD was faulty.
Replaced under warrantee.
Issue resolved.

Many thanks to everyone who has offered suggestions. Arbutus, I take it you would be more suspicious of the brick than the DD-24AX. I do have a spare ATX PSU so I think I will pursue that track as suggested by Luca. It is a 500 W PSU which further exaggerates the low loading situation. However if th...

I have been using the Intel D510MO motherboard partnered with the Winmate DD-24AX PSU in a home brew case for about 6 months now. I have fitted a fan to the case so it runs cool. I run Win XP as a Skype server 24/7. My problem is that this system blue-screens (F4 usually & 7A once) at intervals that...