Default Bootloader not working?? No Image file

Hi, flashed many many times but today when trying to flash the latest NRG ROM when I go into bootloader I am getting problems.

First of all when I go into bootloader it quickly flashes a message saying no image file or something.

Then HSPL 1.56 Olinex it doesnt show USB when I connect via USB just sticks at serial.

When connected to PC the PC just says USB device not recognized.

So I am unable to flash, I am at a loss to what to do???

I have tried different PCs, different cables, all have the same problem.

The phone boots into ROM OK and works fine, and then when I connect via USB it activesyncs fine. I really dont understand this, can anyone help?? PLeeaase as I want the new ROMs