Hi, A customer brought me this laptop Dell Inspiron 3521 (LA-9104P) which isn't power on properly.
When I push power button lights on and indicate 4 beeps in 3 times. (Beep-Beep-Beep-Beep) X 3.
According to the Dell service manual it says this beep codes indicated Bad memory. But I have changed RAM cards and problem is still there.
Is it something relating to the BIOS ? or something else. Bcz I couldn't find any solution from anywhere for this 4 Beeps error.
When I take out RAM cards and turn on the laptop , power lights on and shut down immediately.
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