Dell OptiPlex 3010 User Manual - Page 49

• If the operating system is attempting to boot from a device (optical drive), check system setup to ensure the boot sequence is correct for the devices installed on your computer. Beep Codes The computer can emit a series of beeps during start-up if the display cannot show errors or problems. These series of beeps, called beep codes, identify various problems. The delay between each beep is 300 ms, the delay between each set of beeps is 3 sec, and the beep sound lasts 300 ms. After each beep and each set of beeps, the BIOS should detect if the user presses the power button. If so, BIOS will jump out from looping and execute the normal shutdown process and power system. Code Cause 1-1-2 Microprocessor register failure Code Cause 1-1-3 NVRAM Code Cause 1-1-4 ROM BIOS checksum failure Code Cause 1-2-1 Programmable interval timer Code Cause 1-2-2 DMA initialization failure Code Cause 1-2-3 DMA page register read/write failure Code Cause 1-3-1 through 2-4-4 DIMMs not being properly identified or used Code Cause 3-1-1 Slave DMA register failure Code Cause 3-1-2 Master DMA register failure Code Cause 3-1-3 Master interrupt mask register failure Code Cause 3-1-4 Slave interrupt mask register failure 49