This machine is working fine for me. My other machine got a virus - the way I fixed that was to reload Windows 10 and deleting all files from the hard drive. Check your prospective computer for memory speed, amount of RAM, hard disk size, etc. I bought one before (not a Lenovo, a refurbished Dell but the display adapter failed) and I received a full refund. Also, read all the fine print. I could not be happier.