I've downloaded a lot of live distros in order to obtain a distro that works correctly with my hardware. All (more than 10) isn't bootable for me with default options.
For the most part they are loading with nomodeset option added.
Some of distros loading without lan support, another distros loading with unchangablae screen resolution fixed at 800x600. The most acceptable for me is Gentoo 12.1 x86_64 that loading with 1024x768 screen resolution, with networking and sound support. The main problems of this distro are low screen resolution (need 1280x1024), uninstallable flash plugin and unswitchable keyboard layout.

So are there any liveCD/DVD/USB distro that works correctly with my hardware:
MB: Foxconn Z68A-S
Chipset: Z68
Lan: Rtl8111E
Sound: Realtek ALC888A
Video: GeForce GTX550 Ti
?

Lan and video with 1280x1024 are the main points.
Thanks in advance for any advice.

I searched arount the web and I found that the Linux support for the Z68 chipset is incomplete due (I suppose) kernel support.
First of all I suggest you trying updating BIOS since it seems in some case that it solved issues (https://bugzilla.kernel.org/show_bug.cgi?id=38492)
For the Rtl8111E you can download Linux driver directly from http://www.realtek.com/Downloads/dow...D=3&GetDown=fa and compile ti from source.

Thanks for your reply!
May be BIOS update helps with video. I'm not sure. I'll try it later.
As far as I know the low resolution depends on missing NVidia driver (for my card is 295.33) in LiveCD distributions.
Nuoveau driver that included in LiveCD can't handle my card properly.
On my desktop Debian installation I had the same low resolution with nuoveau. I have installed NVidia driver 295.33 and now my desktop installation works properly with 1280x1024. Unfortunatly I don't know how to add NVidia driver into Live distro. As well as how to add Rtl8111 driver into LiveCD

For this kind of purpose I used Slax in the past: once installed on a USB stick you can add/remve/update programs and the Live distro keeps the changes.