So for a long time i had windows xp but i wanted to install ubuntu so i burned with CDBurnerXP and when i go to other pc's its works but when i go to my older it doesnt. It just shows a black screen with a dash on the top of left corner blinking. I've tried burn it again and it didnt worked and my older pc doesnt accept usb as a boot. What can i do? PS: The pc that im trying to install is old.