Tested and working. NEEDS New battery. Does not come with power supply. Windows 10 pro activated and ready to use.This Dell Studio 1555 laptop is perfect for casual computing with its Intel Core 2 Duo processor and 4 GB RAM. The 15.6 inch screen size provides a clear and comfortable viewing experience, while the integrated/on-board graphics ensures smooth visuals. This laptop comes in black and has a multi-touch trackpad for easy navigation. In addition, it has features such as a built-in webcam, built-in microphone, 10/100 LAN card, and HDMI and USB 2.0 connectivity. It runs on Windows 10 Pro and has a 500 GB HDD for storage. This unit is perfect for those looking for a reliable and functional laptop.