[wubi] prefix is npt set

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http://ubuntuforums.org – I install ubuntu 11.10, using wubi. It asks to reboot. I reboot, than the message in bios: try hd(0,0) prefix is not set. Than it disappears and installation completes. After one more reboot. Again this message: "try hd(0,0) prefix is not set". And i enter ubuntu. But there is some problem with the screen it doesn't show the working place properly, only stripes in different colors and loading logo of ubuntu 5 times in a line. (i can be false with terms) I can open ctrl+alt+f1 and screen becomes black, i even can see that there are some strings, but can't see the letters. So I ud (Hardware)