Help I messed something up in command prompt

I dont know if anyone else has done this I kind of doubt it... but I was messing around in command prompt going to add a user by using net user /add. I had done it before and it worked fine something horrible happened and when i did it this time I typed "net user /add dummy" to make an account called dummy and when I typed "net user" to see if its there I noticed that where my name was under administrator it now listed helpassistant, and my name was listed under this thing called dummy. I hoped it was some kind of error so I log out to make sure my name still works and the password doesnt work now and im stuck with the new account and no admin privilages. I hope some one can help me fix this.

 

Not sure what you have done, was this on a standalone or a server?

The correct syntax is


NET USER username password /add

What happens if you type

NET GROUP (Domain)

or

NET LOCAL GROUP (Standalone)

 

I'm not sure what you mean. I dont think i have a server. I typed net group and it says "this command can be used only on a windows domain controller" and net local group says "the syntax of this command is

NET [ ACCOUNTS | COMPUTER | CONFIG | CONTINUE | FILE | GROUP | HELP | HELPMSG | LOCALGROUP | NAME | PAUSE | PRINT | SEND | SESSION | SHARE | START | STATISTICS | STOP | TIME | USE | USER | VIEW ]"

Which is what happens when I type net.. I'm not sure what I did either it worked fine when I did it earlier. I cant do anything now it just says access denied when I try to do anything like that. I cant get into safemode either both my original account that I messed up and the Admin acount has passwords and i cant get in. I cant try a system restore either.