Windows 7 - Windows 7 with Radeon HD 5770

I had solved the VERTICAL LINES issue by lowering the memory frequency. I'm at 800 now and my computer is perfectly stable for two days now in any game. The GPU is at default speed of 850 Mhz. I'll go up with the memories until I'll find the max stable clock.

I had use ati systray tool for the downclocking. So it seems it's a hardware issue, I'm doing a few more tests in the coming days to be sure and change the card after.

I have the gigabyte's hd 5770 with the original cooling part.

Oki, I just set the clocks back to default 850/1200 and the video card works flawlessly. But keep in mind that I set the clocks to their default speed with ati systray tool and because of that the clock want come down in idle, it will always stay at that clock speed.

So the problem arise because the card is always changing the clocks down, I played in windowed mode and I had GPU-Z on front seeing how the freq is going to 600 to 157 and back to 850 during game play for the GPU. So when the speed stays constant the card just works. It's a bios issue with the card. I will test it more to be sure that's the issue.

I'm sure now why we get those lines. There is a bios issue.
When the clocks are going up and down so is the voltage: 850/1200 - 157/1200 - 600/1200; 1.125V - 0.925V.

So when we get spikes in frequencies meaning the gpu will clock up from idle to 850/1200 (paying games, watching movies, even in desktop moving windows) so will the voltage but that is on paper. The card has trouble to clock the voltage fast enough with the frequencies.

In ATI Systray Tool there is a tab with two choices for voltages: 1.125 and 0.925 - when I selected 0.925 with 850/1200 I instantly got the vertical lines (blue this time). When I have 1.125 and 850/1200 the card is behaving flawlessly because these settings are constant, the card when idling will stay at this speeds.

So if you want to be power efficient just create a profile with 150/300 Mhz and 0.925V and that's it. You will have manually chose another profile with 850/1200 when you play games.

There are many new bioses for HD 5770 on www,techpowerup.com :

techPowerUp! :: Video Bios Collection

There are 3 for my gigabyte HD 5770 But I haven't tried non of them yet.
Cheers.

I'm sure now why we get those lines. There is a bios issue.
When the clocks are going up and down so is the voltage: 850/1200 - 157/1200 - 600/1200; 1.125V - 0.925V.

So when we get spikes in frequencies meaning the gpu will clock up from idle to 850/1200 (paying games, watching movies, even in desktop moving windows) so will the voltage but that is on paper. The card has trouble to clock the voltage fast enough with the frequencies.

In ATI Systray Tool there is a tab with two choices for voltages: 1.125 and 0.925 - when I selected 0.925 with 850/1200 I instantly got the vertical lines (blue this time). When I have 1.125 and 850/1200 the card is behaving flawlessly because these settings are constant, the card when idling will stay at this speeds.

So if you want to be power efficient just create a profile with 150/300 Mhz and 0.925V and that's it. You will have manually chose another profile with 850/1200 when you play games.

There are many new bioses for HD 5770 on www,techpowerup.com :

techPowerUp! :: Video Bios Collection

There are 3 for my gigabyte HD 5770 But I haven't tried non of them yet.
Cheers.

It seems that either ATI are totally incompetent at making drivers or this is a pretty serious hardware problem. I to am suffering from this problem i have tried all the drivers i can find including the 10.3 betas and nothing works many others are suffering from this as well.

AMD Game Forums - ATi "grey screen crash"/coloured stripes [TOPIC]

I have a problem with a 5770 to, the mouse freezes and the screen shrinks, i cant do a thing, i have to pull the power and reboot.

I have a similar forum discusion going on if it helps..
Windows 7x64 system total freeze

I was having a problem with "Display drivers stopped responding and has recovered". Then my computer would lock up. I would have to reboot into safe mode and uninstall the drivers. I was in the process of RMA my card. When I stumbled a pond this post it helped me fixed my problem. After testing the profile it worked. So I flashed my bios with these settings. No more have I gotten the error. Its been 3 days now.

Bashup posted:
I got a fix for this from a friend of mine who is better at pooters n googling than me.
It would seem the idle speeds of my HD5750 and my mates hd5900whatever are a bit low for Windows 7.
Here's what I he and I did and I'm told others have had success with this on other ATI cards.
Using Catalyst Control Center I made a new profile and saved it as whatever.

Then found it in user>appdata>local>ATI>ACE>Profiles, opened it with notepad and
changed two lines which set the minimum idle speed from 157/300MHz to 250/500MHz. (plus the two extra zeros you see in the pic ie 25000 & 50000)

Restart/activate the new profile and jobsagoodun.
I was told to start off with 450/900MHz and gradually reduce it until I found the lowest stable idle speeds.
I'm happy with 250/500 and I havent had a TDR, BSOD or any problems since. woohoo!

pack4to84,

How do you mean you flashed the bios with these settings? Do you mean you flashed a new bios for the gpu?

I used RBE ATI bios editor and changed the clock info 01 default was 157/300 to 300/500.

I've had no issues to speak of with the 5770 either. And I'm seriously hoping it stays that way. The card performs great im my new build.