pc not booting to deployment share

Hi all, just wondering if i could get some advice on this error.

I am deploying windows 7 from a deployment share using a boot cd and everything worked fine until 2 weeks ago

when i started to receive this error:

A component  of the operating system has expired:

File:Windows/system32/boot/winload.exe:

Error code 0xc0000605

Any advice would be most welcome

Thanks