Sapphire ATI HD 5770 1 GB GDDR5 keeps restarting my computer?

[petey84]

Hi,

I have the following specs:

Processor - Intel i5-750 Quad core
PSU - Antec True Power 650W
Motherboard - ASUS P7P55D-LX motherboard
RAM - 2x OCZ Technology DDR3 4gb (2X2) Intel 1600Mhz Kit
Case - Cooler master HAF922 case
Hard drive - Western Digital 500GB Caviar Black SATA-II 32MB
Monitor - SyncMaster P2450H 24" Monitor 1920x1080 2ms 70,000:1
OS - Windows 7 PRO 64 bit
Graphics Card - Sapphire ATI HD 5770 1 GB GDDR5


I have a problem where sometimes my screen will have multi color lines and then go black and then restart my computer.

I have read on this forum in a thread that it is to do with the power saving option on the graphics card which does not go well with Windows 7. Is this the case still as I can't seem to find a certain answer.

Is there a driver issue with Windows 7 and my Graphics card?

I have updated to the most recent driver and it has not changed anything, the problem seems to happen at random times aswell.

I have heard that some people have downloaded ATI Tray tools and changed the voltage on the Graphics card.

I would like to know is this a issue for all ATI 5770 or only a few, if it is only a few then surely this is a hardware issue with some of the graphics card.

Can someone please HELP, so frustrating when I am doing some work to have my computer suddenly restart.

 

[jryan388]

The problem is that when the card is idling, it lowers its clocks (from 850 to like 150 or something), anyway, try increasing the idle clocks on the card.

 

[petey84]

The problem is that when the card is idling, it lowers its clocks (from 850 to like 150 or something), anyway, try increasing the idle clocks on the card.

How do I lower the clocks? Can I do it from ATI Catalyst Control Center and if so how?