I have a Gateway FX6800-01e

To start, I turned off the comp before I went to bed. Everything was working just fine not one issue at all. The next day when I went to turn it on it stops at the gateway promp screen for a few, then goes to a black screen and says,

CD-ROM Boot Priority ..No Medium
Reboot and Select PROPER Boot device
or Insert Boot Media in selected Boot device and press a key_

I went into bios to see if there was anything wrong and I can not find my hard drive in any of the ports. All it finds is my cd/dvd driver and usb when I look at all the ports.
I checked to see if the hd is RUNNING and it is. I also took the cable from the hb and put the cable in another comp and the cable is working just fine.

I APPRECIATE any help and thank you very much as well.

(P.S. I called the tech support and it would of be easier if I just banned my head on the wall then what they tried to do to help me out.)Run hard drive diagnostics: http://www.tacktech.com/display.cfm?ttid=287
Make sure, you select tool, which is appropriate for the brand of your hard drive.
Depending on the program, it'll create bootable floppy, or bootable CD.
If downloaded file is of .iso type, use ImgBurn: http://www.imgburn.com/ to burn .iso file to a CD (select "Write image file to disc" option), and make the CD bootable.

NOTE. If your hard drive is made by Toshiba, unfortunately, you're out of luck, because Toshiba doesn't provide any diagnostic tool.Is there a CD in the drive?Ok I DL the information you gave and i thank you for it Broni. I did the scan and it found no hard drives or anything. I tried it 4 times checking cables and what not with no luck. I DL the seatools for dos v2.13b which I hope was the correct one. The hd is running and there is power to it. I have no clue what happen since I did nothing but turn it off and went to bed to find the next day this to have happened.  If you have any more ideas I would be greatful and try them. If you need anymore info on anything please feel free to ask and ill replay it.  Thank you again to

Also for JJ 3000 there is or was no cds in the computer.Ok I found out from my g/f the night I turned it off and went to bed, she told me when she logged off her comp that it updated windows. Now if mine did I do not know I just turn off windows and went to bed before it finished turning off. So it could of updated windows I dont know I was late and had to get up early the next day so I didnt stay with my comp till it was compleaty off.  I dont know if this helps at all but no matter what I have tired it just keeps saying theres no HD. Thanks for the help EVERYONE hope and this helps in anyway.Windows update couldn't make HD invisible to diagnostic CD.
Try to slave the drive in another computer, and see, if the other computer can find it.Any idea what could of caused this to happen. This is a very new computer. Also any ideas of something I can do to try to fix this?  Thanks Under WARRANTY?
If so, I wouldn't touch it anymore to avoid voiding the warranty.Thanks for your info, I really appreciate it BroniYou're welcome