plop hangs when boot from USB. (legacy BIOS)

[charles]

I installed the PLOP latest 5.0version  on my IBM aptiva 2174 with AMI BIOS(very old,  AMD75X chipset,  model: S30EN1B).

When I chose the USB to boot, it appear " load uhci ... ehci... an ohci..., Host1" then it hangs.

My USB stick works very well on other machines whose bios support the usb booting feature.

I couldn't find any information on updating my BIOS.

So I am looking for help from you here....