how to use a thin client

hello guys,yesterday my dad bought a hcl thin client home cause it was selling for cheap but i dont know how to use it as well as well when i open it i get a window there written nano tc flash where it is asking for password and username and there is no password reset option
please anyone help how to use it:(:(:(:(:(:(:(
;);););););)
By the way if its in wrong section please forgive me.