I cannot get my monitor to work. as soon as i turn pc tower on, the light on monitor goes green then says its going into sleep mode. so i cannot operate anything on the screen at all, i have dusted the inside of pc, and the monitor is a new 1 as old moitor alsoo didnt work. help, i have an acer aspire m1640, and the monitor is a compaq fp5315, thanks

it is not just a monitor there is PC there,
no PC stated, they work as TEAM. ok.
that being said, 14year old monitors.
no not SAFE but power saver mode,
also called SLEEP MODE to save power losses, (Energy Star and GREEN )
the manual covers this. 9227-AC1 (you missed typing fully this)
'Lenovo ThinkVision L171 9227-AC1 17" LCD Monitor.' AC1 is non USA. this is very old monitor and all have this OLD style internal sleep mode. covered in the manual. circa 2005 old. most this old are dead now from dead CCLF back lamp tubes. but the manual shows push menu key on front then in the OSD MENUS WE THEN FIND sleep timer (clock) Inside the monitor,
http://www.manualsdir.com/manuals/165841/lenovo-l171.html if the PC is silent the monitor goes to sleep. if the PC goes to sleep wiggle the mouse or hit space bar until PC wakes up. if sleep is bad in PC turn sleep off. if PC is dead, then that is wrong. test the monitor in 2nd PC if monitor works there the monitor is ok, and PC1 is bad.

have you tryed starting up in safe mode to see if you can get into your windows?

Sorry it IS the monitor this is a common problem, unfortunately, this is evidenced by the fact it still didn't work when connected to another machine,regardless of lack or message. Do a warranty claim.

Monitors are programmed to go to sleep when there is no input. If you shut it down on the other "tower" also it will do the same. You need to physically hit the power button on the monitor to actually shut it off.

Try to change your Graphic Card inside, and have some test if these monitor stays sleep mode.

Your video card or on-board video is kaput. If it worked fine on the other system, but not working on this one ... then you've blow the video.

One note: When the computer is ON, do NOT unplug and re-plug in the monitor. You'll blow the video card.

Luckily, add-on video cards are cheap and readily available ...

Ok. I think "sleep mode" means that your monitor might not have a tight connection. Tighten all connections. Also, push the power button on your tower. When you gegt back, go to screensaver- power settings- and from there you can adjust.

it is going into sleep mode, good luck with this.... i am currently asking how to get my hard drive to quite putting my monitor into sleep mode.

although it hasn't worked for me because my screen stays black, one of the options given to me is to try to start in safe mode and then adjust your settings to "never" on the energy/sleep/hibernate mode

some one else suggested that i remove and reseat the video card

hopefully one of those will work for you

hmmm..sounds like a sleep or screen saver conflict...try booting up on Safe mode(F8) on turn on, and then see how that works. Set your screen saver for Never, and see what happens.

You may be hitting a thermal issue with your video circuitry.

Hi

Disconnect the monitor from the tower and then turn on the monitor.
If u get a msg like no input signal or check video cable then the monitor is fine. If this is the case, it could be a problem with the tower or the cable.