Make sure you have the latest BIOS A11. If issue persists, check the cables specified in the error message. You can use the Owner's Manual for reference.
Let me know how it goes!
Alienware-Naomi Dell | Alienware Technical Support Opening your case does not void your warranty! Check out Alienware Artificial Intelligence I can't always reply to PM's, if you need extra assistance visit:
If you check the Owner's Manual from the link I posted above, you'll find the disassemble instructions.See page 154 for CMOS jumper and page 41 for USB cables.
For further assistance in case the issue persists, I recommend you get in touch with Technical Support in your region or send me a private message if you're in the US or Canada.