This is a used item. Windows 11 has been installed from Windows 10. There is some sign of use, but overall, it is in very good condition. The keyboard has no shine and no fading of the letters. Please check the images for other conditions. The battery is working, but it is a consumable item and is not covered by warranty. Since there was no AC adapter, I will include a working adapter that I have on hand. (May differ from the image) ・DVD multi drive is installed, so you can watch and write DVD discs. ・Web camera is installed, so it's OK for telework! ・Office is installed, so you can edit and save Word and Excel files. ☆Product Specifications☆ Product Name: Endeavor NY2400S CPU: core i5-4200M (2.50～3.10GHz) Memory: 4GB Drive: DVD Multi COA sticker: Windows 7 LCD size: 14 wide non-glare Storage: HDD 500GB LAN: Wireless compatible Web camera: Yes OS: Windows 11 Office: MS Office 2016 Pro+ Accessories: AC adapter ☆Notes☆ I have confirmed that it starts up, but I have not performed any other detailed checks. There may be other issues, such as drivers not being installed. Please handle any issues such as missing drivers yourself. Please only purchase if you understand that this is a used item and the above contents. I am not very knowledgeable about questions, so I may not be able to respond. I will re-check the product before shipping. Please be sure to read the profile section before purchasing to prevent any problems.