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How to identify beep codes: When a laptop or computer first powers on, it goes through an initial set of diagnostic tests to make sure vital components are preforming correctly. These tests are called POST or Power On Self Test. When a test fails, the user is notified via POST codes, Light codes, or Beep codes. For diagnosing Beep codes you need to: • Power on the laptop or restart it if it is already on. • Listen to the number of consecutive beep when the computer begins to boot. Restarting the laptop may be necessary and should not harm the laptop at this time.

Dell Inspiron 15 (3521) Beep Codes # of Beeps Description Possible Cause(s) 1 BIOS ROM checksum in progress or failure System board failure, covers BIOS corruption or ROM errors. 2 No Memory (RAM) detected Memory or Memory slot failure 3 • chipset Error (North and South bridge error, 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 Memory read / write failure Memory failure 5 Real Time Clock (RTC) power fail CMOS battery failure 6 Video BIOS test failure Video subsystem failure 7 CPU Cache test failure Processor failure 8 LCD LCD failure Most Common Fixes: • 1 Beep: Replace the motherboard / system board. • 2 Beeps: Reseat the memory or replace the memory. • 3 Beeps: Replace the motherboard / system board. • 4 Beeps: Reseat the memory or replace the memory.

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• 5 Beeps: Replace the CMOS battery. • 6 Beeps: Reseat or replace the video card or replace the motherboard / system board. • 7 Beeps: Reseat or replace the CPU. • 8 Beeps: Reseat the LCD cable or replace the LCD screen. Well as to the 4 beeps/tick or clicking sounds, Dell seems to think their beep code is working, its not they wanted me to send them my laptop supposedly to replace the memory ram, which is not the case. It’s the motherboard, found a burnt diode/circuit on the circuit board.

So basically instead of them going to charge me for new memory ram they was going to charge for a new board. I looked at my friends board too, same spot but his was making 7 to 10 beeps, burnt diode/circuit. Guess I’m going back to HP.