No distro will launch on Acer Aspire 9300 Laptop

[MonsterNRG]

the laptop will only accept 32-bit versions of linux on it just found that out today, no problems installing Zorin OS 5.2 (ubuntu 12.04 without all the crap) on it!!!

[Bos007]

same problem her with an aspire 9303wsmi.

when booting from usb (serveral distros created with unetbootin/pendrivelinux), at a certain point I 've alway got this message :

"unable to find a medium containing a live file system"

guess what : you have to use the usb-port on the back, the rest won't work
now i can install lubuntu12.10