Disable boot check

I have a bit of a corrupt hard drive and I have it set as slave meaning that it works fine when Ive logged onto windows. But everytime I boot up it does the disk check. I was wondering if anyone knows a way to disable the disk check? At the moment I think its on autocheck, I just want to temporarily turn it off, so I want to know how I can turn the check back onto auto once Im done.

The reason for this is the boot check is stopping me from accessing the cd-rom windows setup disk which I want to use to format the drive and everytime the boot check comes on it ignores it.