User`s guide

106
Chapter 4: Solving Problems
No Beep Codes
If the system operates normally, but there was no beep, the speaker may be defective. If
the speaker is enabled, but the speaker does not function, contact your service
representative or authorized dealer for assistance.
Record the beep codeemitted by POST, and see “Error and InformationalMessages” on
page 110.
No Characters Appear on Screen
If there are no characters on the screen check the following:
❑ Is the keyboard working? Check to see that the Num Lock light is functioning.
❑ Is the video monitor plugged in and turned on? Many modern video monitors shut
down when inactive and may require a moment to warm up when activated.
❑ Are the brightness and contrast controls on the video monitor properly adjusted?
❑ Are the video monitor switch settings correct?
❑ Is the video monitor signal cable properly installed?
❑ Is the onboard video controller enabled?
If you are using an add-in video controller board, do the following:
1. Verifythat the videocontroller board is fullyseated inthebaseboardconnector (and
verify that the video monitor is plugged in to the ACTIVE video controller).
2. Reboot the system for changes to take effect.
3. If there are still no characters on the screen after you reboot the system and POST
emits a beep code, write down the beep code you hear. This information is useful
for your service representative.
4. If you do not receive a beep code and characters do not appear, the video display
monitor or video controller may have failed. You can verify this by trying the
monitor on another system or trying a different monitor on this system. Contact
your service representative or authorized dealer for assistance.