Now I got this error fixed by simply switching around my boot order of my hard disks in my BIOS.

I have had this error on two occasions it seems to come from booting from the harddrive that doesnt contain the boot loader and or the MBR being corrupted on the first hard drive.

What I wanted to ask here is that the computer i just recovered from this on is a in house server never has anything hooked to it mainly serves repositories for my development. I sent it down for reboot and upon coming back up this was the error.

Could anyone give me some insight as to why this would happen out of the blue like this.

Thanks

Hard drive failing?

Can you post the exact error with all the numbers and technical data, it will help. It could be many things, but one cannot know without more info.

Well to be honest that is all the information the OS will print. I have seen threads like this before where the helpee catches flak for a incomplete error report but that is the first thing that displays on the screen when it happens. Though all hard disks appear to be in working order in this case it could have been caused by an unexpected shutdown that some how corrupted the MBR on the first harddrive. switching to the harddrive with the root operating system allowed the system to boot.

So, it basically outputs on the screen "Error Loading Operating System" ?

That doesn't say much at all.

If this happens sporadically, then one may suspect a hardware issue behind it. Try to check the RAM and HDD using something like:
http://www.ultimatebootcd.com/