Did you try a different USB port and maybe different USB flash drive?
What message do you get when it works on another system just after the 'USB 2-1: Serial Number ...' message?
Try CTRL+S to stop console and CTRL+Q to start console and see messages?
If VGA problem, maybe you can use a vga=ask command?
e.g.
kernel /boot/bzimage ramdisk_size=102400 root=/dev/ram0 rw vga=ask
initrd /boot/tinycore.gz
or try other options like SafeMode - the isolinux.cfg file is...
label linux0
menu label Boot from MiniTool Partition Wizard
kernel /boot/bzImage
append initrd=/boot/tinycore.gz ramdisk_size=102400 root=/dev/ram0 rw
menu default
label linux1
menu label Boot from MiniTool Partition Wizard (Safe Mode)
kernel /boot/KERNEL26
append initrd=/boot/tinycore.gz ramdisk_size=102400 root=/dev/ram0 rw
label linux2
menu label Boot from MiniTool Partition Wizard (Compatible Mode)
kernel /boot/bzImage2
append initrd=/boot/tinycore.gz ramdisk_size=102400 root=/dev/ram0 rw