I forgot my administrator user password an I need it for almost everything.

I have an acer aspire 5720 laptop with windows vista and I forgot my administrator user password. I have tried many YOUTUBE videos and, on the step that, according to the video I am supposed to obtain the administrator command prompt window, what I get is the window with the message: TO CONTINUE TYPE AN ADMINISTRATOR PASSWORD AND CLICK OK. I hope you can tell me something about this problem. If not, should I try to clean install windows vista on the laptop? Or am I also going to get the message that I need to type my administrator password?
Asked Jul 30, 2017

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