Compaq 5017 After some use today, screen went blank. I have green power light on front but can not get anything to show up on screen. I'm connected to a MacBook Pro using short pigtail from computer to connector with blue end piece. I checked all connections and they seem solid. What can I do now?

Do you see anything on the screen? Does the HDD LED blink? You can start by removing the HDD and testing it or have it tested.

Hit the small reset button on back,I used a toothpick

Hi there,
do you still see the compaq logo and does it show you the windows boot up screen before it goes blank?
OR
do you see anything on the screen at all after pressing the power button?
Check if the laptop is receiving power. If it has power and you can't see anything on the screen it could mean that the LCD assembly or the Video card of your laptop is bad.
If it goes to the compaq screen and then to windows logo before going out, try booting into safe mode and once there uninstall the video driver from the device manager because that means the resolution was set to something higher than the display could handle.
If it restarts after showing the compaq screen try reseating the memory, hard drive and wireless card of your computer put them one by one and try turning the compter on after each part you put back to check which component is point of failure.
Otherwise you have a bad motherboard and it may have to be replaced.
Hope this helps!

when it power on, your monitor power led turn to green or orange? if its turn to orange, your video card migth be the problem..

ysm7862001, Monitor has possible problem lighting-up cold cahtode fluorescent lamps that provide lcd panel with white light from rear(reverse side) of the panel. No white light= black or blank n black screen. Read my fixya profile for all options you might have open to you.
12fixlouie

Either your Hard drive (hd) crashed or your hd cable or port is faulty. if your software is corrupt boot with a boot disk (assume you are using XP or Vista), press R on the blue options screen. you will be given a black dos prompt screen. Type in fixboot and type Y for an answer.

hmm confusing but try turning your ps3 off at the wall give it 5mins and try again if nothing happens try it on another tv

You need a fluorescent back light and inverter kit. Available on eBay.

Unplug power cable from of the PC. Then hold power button in for 30 seconds, this will drain the capacitors, then plug back in the power cable see if this helps, if not could power supply, or video card.

ViewSonic LCD (VA1912w) Went Blank

I am using this great LCD for about an year. But few times in the past my LCD didnt show up the display though the Green light was still ON, turning off the LCD and opening it again always solved the problem. But now My LCD completely went blank. Turning off/on didnt work at all now. I've tried couple of other tweaks mentioned on this site but they didnt work. I am just seeing a blank screen with green light ON. and ya theres a very low hissing sound coming from the LCD.