Problem installing ubuntu 18.04 on my laptop

I’m using lenovo Ideapad S540

there is 2 kind of problem

-using ‘try ubuntu without install” option

when I getting into drive allocation page, there is nothing but blank, and soon system freezes.

-using ‘install ubuntu’ option

I get error message like this

mmc0: Unknown controller version(3). You May experience problem usb usbx-portx: Cannot enable. Maybe the USB cable is bad usb usbx-portx: Unable to enumerate USB device (initramfs) Unable to find a medium containing a live file system 

I checked my bootable usb stick and it worked fine on other computer.