there really is no definitive answer on memtest, you could likely ask 20 of our regs here and get varying answers. 11 hours straight is certainly enough time to warm up.
So we'll start looking more closely at your drivers
, though on my first pass over that info I nothing really stuck out.
I unfortunately am not in front of the right computer for that right now.
The first thing I would do though would be to hop over to the motherboard manufacturer's website and see if they've updated anything recently for your model.