Fatality motherboard flash screen appears after 4 years. Will not boot?

Today I moved computer outside and blew out dust, swapped G: drive .. It is just an external drive swap, I: goes external, G: goes internal. I do that often.

Then, brought computer back into office, and something new happens: I get the Fatality splash screen, which I have NEVER seen before.

Then, boot screen shows both drives (Raid 0 via motherboard), then says Disk Error. Then waits for me to reboot.

I disconnected all data internal drives, leaving the two C: drives. Then I removed sata card which controlled E and F drives, and same thing:
fatality splash screen
Shows that there are two 400G drives
Then disk read error.

What did I mess up?

DrDave2012-07-08T20:47:23Z

Favorite Answer

First thing to do is make sure your boot drive is connected properly on both ends. Check and reseat the power and data cables.
Edit: a PC CANNOT have 2 C drives.

Larry2012-07-08T22:12:30Z

It sounds like your raid configuration is messed up or one of the member drives (if RAID) has gone bad. See if you can get into the RAID Option Utility by hitting your ctrl + I keys during boot. That will tell you if you're really running a RAID configuration.

Is your system a Dell XPS or Dimension with RAID configuration?
I would prefer more information about your system before providing further instructions because RAID issues can be confusing.