I've tried loading ubuntu
12.04 LTS and
13.04 from cd/dvd (both 32bit versions) on to an older laptop, I end up getting a green/lilac horizontal lined screen, then have to reboot the laptop, and it reboots to windows.
Acer 1355XC 14.1 xga tft amd athlon-m 2600+ 256 ddr sdram 30gb hdd
It originally came with windows xp, at the moment I've just installed vista business, which is running extremely slow, so wanted to try ubuntu.