|"...I will be playing and then suddenly the screen goes to strips, they are a kind of green/yellow colour. "|
If that only happens whe you play a high end game, that's a lot more likely to be caused by overheating of the video chipset than it's a video drivers problem.
" played 3 games:
Napoleon total war
The only crash I got was Napoleon total war.
peak temp on crysis 2 was 66C (almost max settings) no problems,
peak on MW3 was 69C (Max settings) no problems,
but Napoleon total war it got interesting, from the moment I launched the game the temps flew up, at the MENU screen it was at 76C I started a game and there was no change in temps but after a few seconds is crashed still at 76C.
I thought it might be the graphics as it was set to high (but not ultra) so set everything to medium but same thing, shot up to 76C and a few seconds later is crashed "
It appears your video chipset gets too hot when you play Napoleon total war, to the point that it is malfunctioning.
It's also gettig too hot for the other games, but apparently not enough to cause it to malfunction.
High end games use leading software that often has more bugs in it than most software does. A game may NOT work properly with your particular mboard / main chipset or with your particular video chipset despite the fact your system meets or exceeds the minimum requirements for the game. You could try the following, but sometimes you can't get a particular game to work properly with you system no matter what you try.
- check the maker of the game's web site, especially Napoleon total war, to see if there is a patch or an updated version of the game that will help regarding your problem that you can load. Look for mentions of the HD 6970.
- check the AMD web site for mentions of your problem with Napoleon total war - sometimes they have alternate display drivers you can load that cure problems with certain games.
Some video cards have (an) indequate fan(s).
You could try cranking up the rpm of the fan(s) in the card's software (if that's available it's probably in the Calayst settings if that's been installed - if you didn't install Catalyst you may not have that option).
If you CAN increase the fan's rpm(s), if that doesn't help enough, or if it does but the fan(s) is (are) too noisy at the higher rpms, or in any case, there are lots of aftermarket third party fans or combo heat sink / fans that can cool the video chipset better. The greater the blade of the fan's diameter, the more likely it will cool better and make less noise when runing at it's max speed.
What is the temp inside the case when the video chipset is getting too hot ?
That's in the bios's current hardware readings - mboard or system temp - or Gigabyte probably has a hardware moinitoring program on the CD or DVD that came with it that you can install and find that reading in Windows - that's likely to be more accurate than SpeedFan is.
If that gets relatively high too, you need to improve the cooling inside your case.
Some cases already have a place you can mount another case fan so you can blow at, or suck air from the area of, where the video card is.
Or, you could custom mount a case fan on the bottom of the case to blow towards, or suck air away from the area of, the video card.
The fan always sucks in air on the side where you can see the entire fan blade, blows it towards / away from the side where there is a non moving central part. It's probably more effective to blow air at the video card.
(CPU fans are supposed to always blow air towards the cpu's heat sink for the best cooling.)
If you have other cards in one or more slot(s), if there is a card in a slot next to the fan side of the video card, the video card will cool better the more space there is on the fan side of the card - move the other card to a different slot, farther away, if you can.
"Sound continues for a few seconds but then get stuck. Only way to sort is to restart the pc."
When the video chipset gets too hot, that can cause all sorts of strange symptoms, but you can also get strange systems when the cpu gets too hot. A high end game places more load on both the video chipset and the cpu.
The cpu getting too hot is more likely to cause your system to "freeze".
What is the temp of cpu getting to when the video chipset is getting too hot ?