Monitor displays desktop for a short while

I have had problems occasionally with connecting a second monitor, too. Hook up both monitors. In the Windows control panel, look up display (or right click on your desktop and select display). Is the second monitor shown? If not, click "detect" and see if it shows up. I have had a couple times where I clicked on the monitor icon in "display" and then clicked "enable this monitor" and it started working. If not, then try switching the cords so your working monitor is the second one. try again and see if it show up. If not, the problem is probably with the video card or video card driver. Try and update the driver for your card.https://www.geforce.com/hardware/desktop-gpus/geforce-8800-gt
If this does not work, the issue is probably the card.

your display settings to 800

Service manual: http://www.eserviceinfo.com/downloadsm/35483/BenQ_Q7T4-FP71G.html

This is almost the same as DELL 17" LCD (Benq makes Dell moniotrs).
Look for shorted out transistors and cold solder joints, fuse in the inverter section.
See failed Dell monitors here.
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague

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That cap is for the Primary power supply switching circuits. How is the DC secondary side, no blown fuse, shorted transistors in the inverter circuits? Pictures will help, [email protected]
http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
http://www.badcaps.net
It may have the same bd as DELL since BenQ makes monitors for DELL and HP.

Use the remote to access menu mode
then try inputs through the remote

elainenemeth, Hi, Tell me more! How old is this LCD monitor? Is it out of warranty? Did the "SHUT-DOWN-IMMEDIATE" problem occur without warning? Did the BenQ display a "perfect" image the day before? Did you actually count----1001, 1002----1010 and then it shut down, after pushing the monitor on button. Did you do the "flashlight" test? With monitor connected to a "known-good", fully booted pc with Win Desktop displayed, TURN ON the monitor! Did it display the desktop for 1-2-10 seconds ? What did you see or not see when you pointed the flashlight at different angles about 1-2" inches from the now dark (black) screen? Get back to me with your results. I will offer the best advice possible to you as a consumer/user of LCD/FPD monitor. I'm louie12fix on fixya or lmistyrel @ aol.com Bye for now.

benq fp71g no display what can i do

Seems either aproblem with Invertor board or Front panel switches are leaky.
Samir

Hello
I have had this problem twice once at my school and once with my BenQ FP71G Monitor. At my school the monitor ( HP ) just stopped working and smelt like burnt popcorn.(though is think this is due to some kids chucking a soccer(football) ball at it! With my BenQ it has the same problem though i nownthink it is because of the monitor has been on for excessive hours ( 3-4 ) and just shut down because of overheating. I will see in a couple of hours if it works !

Copper_R