Driver error at start up - Press F1 to continue?

Hello, at start up the BOIS runs and all stops, the screen shows all ok until the bottom line when reads,
A : Driver error
Press F1 to continue

you press F1 and the computer works. (running Vista on Zoostorm)
How do I check to see which driver has the error?
Thank you.

I had a reply saying, You need to change the BIOS settings. Set to boot from CD first, then C: and finally A:
That should sort it.

BUT!!
I went into the Bios set up, it shows,
1st boot device CD/DVD: 3M-DVD DC D
2nd boot device HDD: PM-WDC WD1600A

so I have left these settings but still same problem.
Can anybody help? thank you.

Simon Warcup