Radeon HD 5770 - Black screen/Drop input during load !Halp!

[tol]

Hey, I just took the plunge on a sapphire 5770. Wiped all the ati drivers, uninstalled my old GPU, put in the 5770 and updated to the 10.8 catalyst ones. Seemed fine until I ran Starcraft 2 and bout 5 seconds in my monitor lost input forcing me to hard restart. It did it again for me running the 14 benchmark.

Anything I could be overlooking? I really want to believe it's a driver issue from what i've been reading. I was using HWMonitor and it didnt appear to be overheating at all. I really want to try any alternatives to RMA'ing it so I'm hoping for a little help

[Robbb]

Hmm may be a power supply issue, how big is your power supply?

[AlexRuzhyo]

Starcraft II has a problem, I'm not sure if it's patched, but basically it can overheat your card because there is no cap on FPS/Menu effects. Try doing this and see if it fixes it:

"Certain screens make your hardware work pretty hard. [For example], screens that are light on detail may make your system overheat if cooling is overall insufficient," Blizzard rep "Martyt" wrote in an official Starcraft 2 forum post.

"This is because the game has nothing to do so it is primarily just working on drawing the screen very quickly. A temporary workaround is to go to your Documents\StarCraft II\variables.txt file and add these lines:


frameratecapglue=30
frameratecap=60

You may replace these numbers if you want to.

Source: http://www.tgdaily.com/hardware-feat...verheating-fix

EDIT: I have an XFX 5770 with a 550w PSU. The rest of the machine is an HP assembled rig. If the above solution doesn't help maybe this information does (if PSU is the problem).

[tol]

@alex: yeah I play a lot of sc2 so i already had that in my var file. thanks though

yeah my PSU is 460w, it says it should run off 450w but i'm starting to think it may be a PSU issue because the problems happen under load.

[Furtwangler]

Under load that 450 watts goes up because of the processor/hdd, etc using more as well. Probably the problem.