Problems with my acer m1610

Registration date
Thursday November 22, 2012
Last seen
November 22, 2012

would someone please advise me on what to do,i have an acer aspire m1610 which did have windows 7 on but i put windows xp on it instead it worked fine but then noticed it had a root kit virus so downloaded avg root kill but befor i had a chance to run the program my daughter turned the unit off now when i switch it on all i get is a 5 second bleep followed by another 5 second bleep then a pasue followd by the same again i also get nothing on my screen ,would someone kindly explain to me what ive done wrong or better still explain how i can fix this many thanks in advance