Beep Codes - Dell Vostro 420 Service Manual

– Ensure that the voltage selection switch is set to match the AC power
at your location, if applicable.
– Ensure that the processor power cable is securely connected to the
system board (see "System Board Components" on page 40).
• If the power light is steady amber, a device may be malfunctioning or
incorrectly installed.
– Remove and then reinstall the memory modules (see "Replacing or
Adding a Memory Module" on page 104).
– Remove and then reinstall any cards (see "PCI and PCI Express Cards"
on page 59).
• Eliminate interference. Some possible causes of interference are:
– Power, keyboard, and mouse extension cables
– Too many devices on a power strip
– Multiple power strips connected to the same electrical outlet

Beep Codes

Your computer may emit a series of beeps during start-up if the monitor
cannot display errors or problems. For example, one possible beep code may
consist of three short, repeated beeps indicating that the computer has
encountered a possible system board failure.
If your computer emits a series of beeps during start-up:
1 Write down the beep code.
2 Run the Dell Diagnostics to further identify the problem. (see "Dell
Diagnostics" on page 13).
Code (repetitive
short beeps)
1
10
Troubleshooting
Description
BIOS checksum
failure. Possible system
board failure.
Suggested Resolution
Contact Dell (see "Contacting Dell" on
page 137).