Dell Inspiron 15 (3521) Beep Codes
How to identify beep codes:
- 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 |
| 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.
- 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.
