Installing Ubuntu in Windows 7 virtual PC

Solution 1:

Looks like some people have success and some don't. You can try (from here):

On the first screen, choose [English].
Press [F4] and select [Safe Graphics].
Press [F6], press [Escape].
From the command line:
Remove “quiet splash –”
replace ”vga=791 noreplace-paravirt” without the quotes.
Press [Enter] to start the installation.

From the Wikipedia entry on Windows Virtual PC

As of Windows Virtual PC, Linux guests are not officially supported. Linux additions are supported in Microsoft Virtual Server, and these additions should also work in Virtual PC.[35] Some Linux distributions must be installed in text mode, as Microsoft Virtual PC only emulates graphics at 16-bit or 32-bit color depth, not 24-bit.Ubuntu 8.10 (Intrepid Ibex) must be installed in SafeMode, but does not require other changes.

Solution 2:

Is Virtual PC an absolute requirement? If not, use Oracle's brilliant (and free) VirtualBox.