My usb with Ubuntu 16.04.6 Desktop (32-bit) doesnt boots from usb

[darkshadowhacker]

Im trying to boot from usb ubuntu 16.04.6 to fix my GRUB with Boot-Repair because it says Error:Unknown filesystem but when i try to boot from usb it comes back to the boot selectin place and doenst boots

[ubfan1]

1) Does your system meets the minimum requirements for your selected edition?
See https://help.ubuntu.com/community/Installation/SystemRequirements.
Lack of enough memory can cause boot failure of the install media. Select a
lower requirement edition like Lubuntu or Xubutnu if necessary.
2) Did you md5sum check the downloaded iso?
See https://help.ubuntu.com/community/HowToMD5SUM
Check the number against the listing in the link for your release listed at
http://releases.ubuntu.com under the MD5SUMS link.
For other releases' hashes, like lubuntu, see:
https://help.ubuntu.com/community/UbuntuHashes
3) If using a CD/DVD, did you burn the disc as slowly as possible?
See https://help.ubuntu.com/community/BurningIsoHowto
If using USB install media, use a tool like unetbootin or rufus.
Don't just copy files to the USB.
See https://help.ubuntu.com/community/Installation/FromUSBStick
4) Did you select the media check before trying to install?
See https://help.ubuntu.com/community/Installation/CDIntegrityCheck
5) Did you ever do a "memory check" (perhaps another live-media menu choice) on your PC?

Doing the above can save you a lot of time struggling with a bad install media or
hardware problems.