Summary

Chapter 11: Advanced Personal Computers 31Figure 11-26 Loose Adapter CardNoteThe video adapter can sometimes become unseated because the large monitor cable can put pressureon it, or it is mishandled when someone is tightening the retainer screws. If a video adapter is used inan expansion slot, the integrated video adapter from the motherboard is likely to be disabled. If youconnect a monitor to it in error, the computer appears not to work.Power DevicesInspect power strips, surge suppressors (surge protectors), and uninterruptible power supply(UPS) devices. Make sure that there is proper and unobstructed ventilation. Replace thepower strip if there have been electrical problems or excessive thunderstorms in the area.Loose ScrewsLoose screws can cause problems if they are not immediately fixed or removed. A loosescrew in the case can later cause a short circuit or can roll into a position where the screw ishard to remove.Keyboard and MouseUse compressed air or a small vacuum cleaner to clean the keyboard and mouse. If themouse is the mechanical type, remove the ball and clean off any dirt.CablesExamine all cable connections. Look for broken and bent pins. Ensure that all connectorretaining screws are finger tight. Make sure cables are not crimped, pinched, or severely bent.