Bought Desktop 3 years ago. Came with Windows 7 and Windows 10 to download when needed. Called Dell to ask where I could locate the Windows 10 so could install. Dell advises not to do it alone; I should use a tech. I said great can we set up a call. Dell tells me my system is out of warranty and it will cost $99 for Dell to help. I don't believe it's a warranty issue. The Windows 10 installation I already paid for upon buying the computer. There's no Dell documentation telling ever that I had a requirement to install with any conditions. That's why people bought these transition machines. Dell refuses to help unless I pay because it's out of warranty. I say finally that Dell has an ethical responsibility to help, or they were selling these models under false pretenses.