Quote: "Quote: "Processor: Intel Pentium 4 1700 MHz /
Display Card!: DirectX 8 compatible graphics card /
Memory: 512MB
Free Disk Space: 5GB
Operating System: Microsoft Windows 2000/XP/Vista"
Just googled "Portal system reqs" and found this"
Funny, 'Windows 7' doesn't appear in those requirements.
I really can't see why somebody is annoyed that somebody hasn't upgraded their software to work with an OS that hasn't even been finished being developed. As it's in a BETA stage you can't expect all of your software to work 100%
But from reading this thread, it seems that Steam isn't to blame, nor are ATI. Windows 7 maybe or something else to do with your system, my advice would be to get Vista or XP back onto your system, after all Windows 7 should not be your primary OS, because it isn't complete, the BETA stage is just so people can actively bug test it for them and for developers to start working with it. Thus it is not perfected.
Same applies to BETA drivers, they may not work 100% - I had BETA nVidia drivers on my laptop, after a while they got funky and had weird errors, I checked nVidia's site and found the final version had been released and that problem had gone.