Hi sony,

I am guessing that this "no video input" is something on the screen? Please try powering up the screen with it disconnected from the computer........ do you get the same message?

Can you try a different (known to work) video connection cable?

Could you still get in to the BIOS even though it says no video input
Yes, it sounds like it is booting at least part way. Trouble is that without a display you cannot see what you are doing On the other hand you might be able to, as BIOS setup is minimalistic............. worth a try?