Sarah had problems with her notebook's keyboard and mouse. the cursor would keep drifting towards left whenever she tried to write anything anywhere. Her mouse pad did not work fine either. I first tried to look at the settings but could not find anything. Then opened the keyboard and replaced with another one. It worked fine after replacement revealing the cause of fault.

James's Dell Optiplex GX620 did not recognize the Lite-On DVD ROM. Tried to first scan for any new installed hardware in contol panel. Then replaced that ROM with another one which did not help at all. I simply meant that computer did not recognize any ROM. Rebooted the system and went to the system setup or bios menu. The CD or DVD ROM device was disabled. I enabled that and the system now recognized the device.