Hello,

I have a machine with an AMD 4-core, ASUS P7P55D CM with a 1GB GeForce GT240.

I used Ubuntu 9-04 without important problems (except some random blocks of the machine which lasted 5 to 10 sec).

With Ubuntu 11-04, I have strange phenomena:
- The computer is frozen after a random time.
- Non sense characters randomly happen to be sent on the console and text editors (windows that open and close)
- Phenomena of pixels on the screen: dots appear on the screen and make it unusable.

All these phenomena involve a reboot of the machine.

I tried to install other distros:
- Mandriva: Blocking
- ArchLinux: Mounting partitions impossible

And now when I reinstalled Ub. 9-04, I am blocked at the the set-up step: no mouse no keyboards
Everything works fine under windows

Do you have any ideas? A similar experience? (My USB drive does not boot: not too much opportunity to install something else)

It may be the graphics card….. don’t know.

I'm in a bad situation, it's urgent for me.

Thank you in advance for any help

J.