If it doesn't work (especially if it doesn't work on that old PC), it might be defective. Do other monitors work?
I want to say sorry in advance - my english is below average but i'll try to describe whats wrong. My monitor is Samsung S22C300B. I was using it before then stopped. I've got a new computer yesterday. I plugged it to a monitor with a DVI-D cable - it didn't work. I was trying to plug it to my graphics card and motherboard - it didn't work. Then i tried to plug it to an old computer with VGA cable (monitor was plugged to this computer before and worked). It didn't work. Monitor acts like its not even plugged - nothing shows up, buttons doesnt work.