Help needed, RAM/Mobo issue

[Alessandro]

I went to spray a supposedly harmless can of compressed air on my mobo/RAM, but I suppose it was so cold that some air condensed, and it became a sort of light mist. Now, my Windows 2000 hard drive will not boot, it hangs up at the text loading screen with the gray bars before it goes into graphical loading mode. I have another hard drive with Fedora installed, and for whatever reason it is still working, so I figured I'd back up my Win2k stuff on that before moving on. What I was wondering is, how can I determine exactly what is wrong? I know memtest86 for memory; are there any other testers for memory, and what about for my motherboard as a whole (are there memtest86-style programs to test motherboards for defects)? I plan on plugging the HD into another comp to see if the data was corrupted or no.