An enthusiastic user of the IBM ThinkPad T43 has successfully installed nearly all versions of Windows from NT 4 to 10 22H2 on the device, complete with driver support, without using virtual machines. The ThinkPad T43, released in 2005, was IBM's last laptop model before the company was acquired by Lenovo. The user documented their process on Reddit, showcasing a gallery of screenshots of various Windows versions. The T43 originally came with Windows XP and has key components including an Intel Pentium M processor, ATi Mobility Radeon X300 or X300SE graphics, a 14.1-inch screen, support for up to 2GB of DDR2 RAM, and storage options from 40GB to 100GB HDD. It also features connectivity options such as Wi-Fi, Bluetooth, Ethernet, and various ports. The laptop is noted for its robust build quality and exceptional keyboard, weighing approximately 2.3 kg (5.1 pounds).