Hi I have a an Acer Aspire 5253-BZ660 running Windows 7 and I'm trying to install Ubuntu from USB. I copied the .ISO file to the USB. I have also gone into the BIOS and set it to boot to USB first. I've also disabled QuickBoot and Enabled F12 for Boot Options. When it boots, I hit F12. I'll select the USB I want to boot from and the computer will then start loading Windows; no error or anything. I even tried converting the .ISO to .IMG and it still didn't work. Is there something I'm doing wrong? I've checked other forums and none of those seem to help. I'd appreciate any advice.