Solving Problems 165If all items are correct and problems persist, contact Technical Support forassistance.No Beep CodesIf the system operates normally, but there was no beep, the speaker may bedefective. If the speaker is enabled, but the speaker does not function,contact Technical Support for assistance.No Characters Appear on ScreenCheck the following:• Is the keyboard working? Check to see that the “Num Lock” lightis functioning.• Is the video monitor plugged in and turned on? Many modernvideo monitors shut down when inactive and may require amoment to warm up when activated.• Are the brightness and contrast controls on the video monitorproperly 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, you may need to performsome additional checks.1. Verify that the video controller board is fully seated in the systemboard connector (and verify that the video monitor is plugged in to theactive video controller).2. Reboot the system for changes to take effect.To Test an Add-in Video Controller