LED blinks two times followed by a pause, blinks two times, pause, etc. This pattern continues until the system is
powered off.
Code Cause and Troubleshooting Steps
1 System board: BIOS ROM failure
System board failure, covers BIOS corruption or ROM error
2 Memory
No memory/RAM detected
3 Chipset Error (North and South Bridge Chipset, DMA/IMR/ Timer Error) , Time-Of-Day Clock test
failure , Gate A20 failure , Super I/O chip failure , Keyboard controller test failure
System board failure
4 RAM Read/Write failure
Memory failure
5 Real-time clock power fail
CMOS battery failure
6 Video BIOS test failure
Video card failure
7 CPU - cache test failure
Processor failure
8 Display
Display failure
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