All of a sudden my. all of a sudden my moniter would not stay on I thoght it was my moniter

Question

all of a sudden my moniter would not stay on I thoght it was my moniter because it was getting no imput siginal so I hookes uo another comouter to the moniter and it works fine, the message I was geeting was no imput siginal in dvi and would not let me swithch to vga and also osd lock out but work fine on anther computer Any idea could it be my video card gone bad? my computer is hp m800e media center a year old on june and the moneter is hp w1907