Are you looking for linux reseller or windows reseller?
I'm not sure if any hosts provide windows reseller with end user support.
End user support is usually available with cpanel reseller where the amount of support is little and doesn't require extensive knowledge like windows hosting.
PremiumReseller.com Hyper-V SSD VPS USA London Singapore
Reseller Hosting Cpanel PURE SSD CloudLinux Softaculous
Windows Reseller Asp.NET 4.5 MSSQL 2012 SmarterMail Enterprise