All 3 desktops are running Windows 10.thw i7 Dell 7040 has 12 gigs ram,500gig hard drive,both hos have core i5 ,500 gig hard drives and 4 gigs or better ram the Dell has ddr4,hps ddr3all work great.they come complete with monitors ,keyboards and mouse.the lap tops work ,the 17 in Asus needs keyboard. Or use external or onboard key board,the gateway needs battery and system I installed,the Asus chromebook just needs system installed.selling as bundle .all for 125.