[Blind-sysadmins] terminal services accessibility

Good morning, my name is Julian, I'm from Brazil. work in the area of ??management configuraçõ, and gosria the following information: I use terminal services to access the rowing máq cl, to perform some tasks. use NVDA such as screen reader. Audio tab, checked for audio work on the local computer. However, the warning text before logon uzer, always need someone to help me enxe. not existnhum feature, which gives access to terminal services on this screen? how do you do? not to need someone to help you see. for example, want access logon screen, using a screen reader, in remot computer. More a computer not installed a screen reader. thanks