Turn power on stays on few mintues then shuts down turn power off and back on does same thing screen looks a little dim

SOURCE: Gateway Monitor FPD1760

Power light coming on when you plug it in but no lighting of the screen is usually caused by the power inverter board having gone bad. Common on the 17s due to their age is a bad bulb or more.
I repair these 90% of the time
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SOURCE: Blank screen, but has power

It is most likely a backlight that has burnt out or something else of the sort. You will want to call HP Support and explain to them of your troubles.

SOURCE: Dell lcd monitor, turns on but only stays on for about 30sec

The problem is your backlight lamp is bad. Your description is of very classic symptoms for the backlight. You can either replace the LCD assembly or monitor or try replacing the backlight bulb itself. You'd have to call around to some repair shops to see what they'd charge to see if it is worth it to you to fix it or replace it. Here is a link to a site online that shows the bulbs and how to replace them if you want.
http://www.ccfldirect.com/?gclid=CPPCiNau9JkCFQkzawodGFudQg

SOURCE: shuts down after a few seconds

monitor come on for two seconds and them go blank

SOURCE: Multisync LCD 1700V turns on then screen goes blank and shuts off

Does the power light stay on? If so, you have an inverter problem. If the power light goes off, you have a power supply problem.