I have an bootable USB with windows 10. I tried to install it on my laptop lenovo G50-80: I've selected the boot menu (after turning on the laptop via a small button: here), but the usb name wasn't there, I tried an USB flash drive with Ubuntu 18.04 on it, it worked perfectly.
The usb with windows on it is kingston and the second one (with ubuntu) is transcend, if it matters. I have windows 8.1 (64-bit) preinstalled on the laptop. I used microsoft toolkit. I want to install windows on 64-bits.
Any suggestions? Thanks in advance.
Edit: The BIOS mode is UEFI and HDD uses GPT partitions.
Edit2: Now I see that the USB have the MBR partition schema. Quoting from tomshardware answers:
By default the Windows USB installer creation tool will not change the partitioning scheme or file system of the USB device itself.
How can I change the partition schema and get this done successfully?