NEC LaVie PC-LL550SG6B, Windows Vista HOME Premium The system has been tested and initialized to the factory settings for this listing. - No issues with the LCD screen. - CD/DVD reading/writing works without problems (worked fine before initialization). - No issues with the speakers. - Wireless Wi-Fi works without problems (worked fine before initialization). - No issues with the keyboard (keys). - Please check the images for hardware specifications and installed software. - There are no noticeable scratches or stains, but please assess the condition from the images. - The battery is unusable due to aging, so please use it with AC power connected. - The mouse has a poor left-click response and is considered junk/an extra. - If the AC adapter is disconnected for 1-2 weeks, the BIOS may prompt you to press the F1 key during POST due to the button battery being drained. However, it works fine after pressing the key. - This message will not appear and there will be no problems if the AC adapter is always connected (plugged into the outlet). Series Name: LAVIE Storage Type: HDD