keyboard fails often

[mufc]

SHIFT key  not space key !

There are two SHIFT keys on a keyboard, one on the left and another on the right, they usually have an up-arrow logo on them.

It is the one you press if you want a capital letter or  a character written above another character on the same key.

So when E2B starts to boot, you just press down and hold down one of the SHIFT keys and then you should see a text message in yellow saying something like
INFO: GRUB4DOS USB 2.0 DRIVER  and then maybe some numbers etc.

When I hold down the Shift key this is what I get:
INFO: GRUB4DOS USN 2.0 DRIVER (SHIFT KEY DOWN)
.....Scanning USB devices.....
And it just hangs there, and hangs and hangs.