Boot-up problem

Although there is always a reason for problems I cannot find out what went wrong with my system.
Upon Boot-up everything appears normal and I get a Windows screen that shows it is loading (moving blocks in a narrow rectangular window) and then I get a blue screen and text stating “One of your disk drives needs to be checked fo consistency…..Press any key within 10 seconds to quit check. I get this for C: and D: but not for E:, F:, or G:.

If I stop the check the Desktop comes up and everything appears to be fine. If I allow the check to proceed the Desktop comes up and within a few seconds the system reboots resulting in the same blue screen as above. It will continue this boot try and reboot until I cancel the check as above.

First how can I get rid of the blue screen that comes on and what would cause this?

Gus