System not Booting Up - Letter J displayed

nitinpai

Right off the assembly line
Hi! Today I was trying to make a bootable Windows 7 USB using WinToFlash. The application requested the source (location of OS) and target (USB drive) which I furnished after which it proceeded to copy the data onto the USB drive. On completion the system restarted on its own but did not boot up - only the letter 'J' is flashed on the top left of the black screen. Nothing happens beyond this point.

- I've tried restarting a multiple times but the same result.
- I've tried booting from the DVD drive by making use of the Windows installtion disks but the setup fails of recognize any Windows installation or even the harddisk.

Could you please help? Should I try to intalled a driver so Windows setup can recognize the harddisk?

My configuration is as under-

HP ProBook 4420s
Windows 7 (installed from a DVD)

Thanks!
 
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