X1950 Pro weird problem

I'm having the same problem and the 7.1's did not fix it for me. I guess I have to wait for the 7.2's. I'm using a Sapphire X1950XTX and dual monitor setup. Viewsonic VX924 and VX2025wm. Both running thru DVI. I know it's a driver error and not hardware related because both screens boot fine in safe mode and before installing Catalyst drivers. I'm out of idea's.

 

X1950 Pro 512MB AGP Issues - Resolved

I had many of the same problems described in this forum after installing my new Diamond Viper X1950 Pro 512MB AGP card. The screen would blank out, although my computer seemed to still be running fine, or artifacts would fill the screen whenever I tried to adjust 3D settings in Catalyst or ATI Tools.

After many frustrating days of updating drivers, motherboard bios, etc., I realized that my Diamond video card actually has 2 power connectors. I had only connected one of them to my PSU. When I connected the second one, all of my problems cleared up! I first used the same lead from the PSU and connected it to both molex connectors using a Y-cable, but realized it was pulling all of the amps from the same spot. By using 2 separate power connector leads, I eliminated all problems - and I'm still only using an Antec Trupower 400W PSU!

Keep in mind that my system runs pretty lean from a power standpoint. I have the X1950 Pro in the AGP slot, Soundblaster Audigy in one PCI slot, and onboard ethernet. I run 2 hard drives and 2 DVD Drives, and externally there's only a USB keyboard and USB mouse.

Hope this helps. Check not only the wattage of your PSU, but the amps & number of rails. Remember, every add-in card or device plugged into your computer is going to draw from the PSU. Make sure you have the wattage & amps to sufficiently power everything.

One suggestion before going out and spending a bunch of money on a new PSU - Pull all non-essential cards and peripherals and see if the system runs fine without them. If so, it's almost definitely a power issue.

 

I have a brand new Antec 650w PSU. My Sapphire X1950XTX only has one PCI-e 6 pin power connector. My motherboard has a 4 pin molex port for giving additional power to the graphics ports. I had that plugged in as well. Still not working. I don't think my problem is power related cause it wouldn't work in windows safe mode or prior to installing Catalyst drivers. Mine is driver related for some reason. The driver won't pick up 2 DVI monitors connected for some reason.

 

My bet would be corrupt EDID information. Viewsonic has an (old) EDID editor that works in Windows, and Powestrip can upload it to the monitor (as well as edit them). If it doesn't work at all with DVI in Windows (even in Safe Mode) there is a Dell disc out there that has DOS utilities for the job. (Although some say it works by booting off the disc directly, I wouldn't run the Dell utility indiscriminately as it could likely program 'different wrong' values based on whatever monitor it was released to fix). If this is the issue, you could get a healthy EDID from a working monitor, perhaps directly from Viewsonic, or by dumping and modifying it yourself. The Powerstrip forums might be of help, and you can find lots of additional info with a bit of Google-fu.

 

I'm also experiencing the same problem - PC boots fine up until Windows XP logo, but then nothing. I know the computer is still on because the Windows sound plays.

The weird thing is that up until last week the card was working fine, and I can't think what's changed in the meantime. With no drivers it works, then the second I install the drivers nothing. Which is frustrating.

It's a Sapphire x1950 Pro attached to a Hans G monitor through DVI.

Any ideas?