if the computer fails the POST, the computer emits a series of LED codes in amber color during the start-up.

try clear cmos settings.

#11 CMOS reset jumper (CMOS_CLR)

#12 Password reset jumper (PW_CLR)

1. Turn off the computer and disconnect the power cable from the computer.
2. Remove the computer cover. 
3. Locate the 2-pin password jumper labeled PW_CLR on the system board.
4. Remove the 2-pin jumper plug.
5. Locate the 2-pin CMOS jumper labeled CMOS_CLR on the system board.
6. Move the 2-pin jumper plug from the password jumper to the pins on the CMOS jumper.
7. Plug the power cable to the computer and wait for 10 seconds for the CMOS to clear.
8. Disconnect the power cable from the computer
9. Move the 2-pin jumper plug back to the password jumper.