First, remove that phone number. This is a community forum.
If you have any add-on graphics card, remove it. Plug your monitor into one of the graphics ports on the motherboard. Try booting. Did you see a screen?
If not, try this:
I know you are not having a password problem. But, follow the instructions here and move the yellow jumper as pictured to pins 2-3.
When you boot, you should see the maintenance menu. Reset your video settings. F10.
Actually i don't have any add in graphics card. if i change the to 2-3 or 1-2 two beep sound and normal boot with no video.if i remove jumper
it shows me the image given below. please help me.