I noted in another thread that my Acer Aspire 1810TZ would not boot up a 64 bit Remix OS live USB, even though it's a 64 bit laptop. I have since noticed that it wouldn't boot up a Ubuntu 16.04 live usb and most recently, it wouldn't boot up a Fedora 25 live usb. It does boot up Knoppix 7.2, Remix OS 32 bit, and Ubuntu 16.10 live usbs. All of these live usbs boot in my Dell xps laptop, and my iMac. What gives - I don't see a pattern to this. In some cases where it won't boot, the laptop doesn't recognize the usb stick in the boot menu, but in most, it starts the boot sequence and almost immediately stalls. Several of you guys have Acer Aspire laptops - have you noticed this as well? What is the cure, aside from booting from an external DVD?
Do you completely shut down the computer between reboots when you boot from USB (i.e. cold boot)? It's been my experience that some systems don't seem to pick up USB drives properly for booting from them if it's a warm reboot. Don't know if that's what you're experiencing.
I've tried both ways with these problem live usbs. Doesn't seem to matter.
Hmmm. I'm guessing you already turned off secure boot? Was thinking some distros might boot with secure boot and others not. But that's just a wild guess.
This laptop doesn't have a secure boot option. But that shouldn't mean it can't boot 64 bit live distros.
Interesting twist - I tried out my newest usb stick (Kingston DT 101) using the Fedora 25 live usb tool on Windows 10 from my Acer. It downloaded and installed the 64 bit version on my usb stick, and booting this one from my Acer worked. So perhaps the issue is a particular usb stick rather than 64 bit or alternatively, there is something residual on it from a previous live distro that isn't removed by gparted and doesn't show, and this is keeping it from booting properly.