Temperamental Mobo/HDD?

[Exploration]

I did have these HDDs stacked on top of each other with at least 10MM clearence between each one, not to mention they're mounted behind a 120MM fan. So i don't think ventilation is the issue. My PC sorta sits on it's own little table next to my desk and the room averages about 15 - 19 C. Mind you it has two intake case fans and two exhaust so wouldn't have thought temperature should've been a problem. It's slightly dusty in here, i.e normal room type dust but i wouldn't say it's anything worth noting. The power sockets/extension cords are bolted onto the back of the desk well away from the PC itself as i'm aware Static can be an issue from things like adapters/transformers.

For now the problem seems to have resolved itself, i chanced a PC reboot today and it seems to be okay for now however that's not to say it isn't likely to do it again. Managed to find the model number at long last. Tiniest lettering ever but it's the Asus P8H61 Mobo. Asus Board Page I have a feeling this is the wrong board revision version since mine has 6 SATA ports. 4 3G/s and 2 6G/s. Along with supporting RAM above 1666 Mhz (currently running 8GB dual channel at 1666) However it's the same board spec wise with the exception of these two aspects.