Alienware Beep Codes Table

Laptops
1 Possible Motherboard (covers BIOS corruption or ROM error)
2 No RAM detected
3 Possible Motherboard Chipset
4 RAM failure (other)
5 CMOS Battery
6 Video card/chip
7 CPU
8 LCD 
 
Desktops
1 Possible Motherboard (covers BIOS corruption or ROM error)
2 No RAM detected
3 Possible Motherboard Chipset
4 RAM failure (other)
5 Real Time Clock (RTC)
6 Video card/chip
7 CPU