Display Problem….

Hello sir ,

To day i got a problem. I had a pc which having the operating system windows NT(Workstation).when i am not in home,some body change the display setting which is not support to my graphics card.
When i start a system then it will nothing to visible accept line.it will display all the things but it’s not properly visible .so nochance to change display setting to proper way.

I know how solve this prob but it having another problem that was i remove time to dilay option at startup to choose operating system from system properties.

So please sole that.