Horrible service, and support! Bought a refurbishe...

Horrible service, and support! Bought a refurbished Optiplex 990 with Windows 10. Windows does not support Windows 10 and there are challenges getting updates. Service Rep could not advise if I should update the Bios as the Dell website advised and said I "may not want to just for the sake of doing it. The computer might not come back" I think he meant boot but it was a hard conversation to follow. GO ELSEWHERE!