Re: GTX470 occasionally black screen and hard freeze
You stated that this problem was o/s independent...what does that mean? Do you mean that it is doing this in Windows and not Linux, Linux and not Windows....?
If it's one of the above, I would totally wipe the driver from your machine, and re-install it. If it's doing this on both o/s, then you may want to replace the card--especially if it's not doing it with another card.