Arch Linux Live USB no longer booting UEFI

My Lenovo laptop is running Arch Linux with a UEFI GPT partition table. One day I powered up my laptop, but couldn't get passed the Lenovo boot screen. I used a USB stick to boot up and reinstall Arch. However after this I still couldn't get passed the Lenovo boot screen. I tried to reinstall it again using the same USB stick and ended up with two entries in my UEFI boot menu. I formatted the GUID partition to FAT32 using GPARTED live USB which deleted them. However I can no longer use my Arch UEFI USB stick to boot up. I get to the bootloader menu on the USB stick but after the timeout I get a blank screen.