Basically after reformatting my notebook, when trying to boot from a USB the screen flashes for a split second only to bring me to a black screen with a flashing cursor. Anything I can do to fix this or did I just fuck something up?
I was trying to re install it via usb. Which obviously isn't working as trying to boot results in the black screen. I tried booting into Windows 95, 98 and Linux with the same result. I have a feeling that something went wrong when I reformatted it.
What Phillip said. The black screen with a cursor blinking indicates that the computer is attempting to boot to a device that is not set up to be booted from. It could be trying to boot from the HDD (that has been wiped/reformatted?). Or your USB device is not bootable, in which case the computer will look for the next device in the lineup (see BIOS settings/boot options).
Try a new pen drive, they don't last forever. I would be tempted to try a new one before bumping the problem, you never know it might be that. You're gonna look a bit silly if it is the pen drive that's knackered and you didn't bother to try a new one.