When the computer is on it works fine, but if the monitor (LCD) is touched (as to open or close it) the computer goes dead completely. Its almost as is the computer power down instantly, but the the LED's stay on w/o blinking. The only way to recover is to do hard power down.
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
Hey Lea, Try the steps below to see if they will resolve this issue that you are having with your computer. If this does resolve the issue you can email me. My email address is listed below in my sigfile.
1) UNPLUG THE LAPTOP 2) REMOVE THE BATTERY 3) HOLD DOWN THE POWER BUTTON FOR ABOUT 30 SECONDS TO 2 MINUTES 4) THEN PUT THE BATTERY BACK IN 5) START IT UP..
Have you connected to an external monitor, just for fun? Try that, don't run off the battery, in fact, take the battery out. Use only the ac adapter for power. Now boot pressing f1 repeatedly until you get into bios. Just let it remain in the bios screen for a few minutes, long enough to prove you don't have a hardware problem such a s the inverter going out, etc.
Then allow it to continue to boot to windows. If it appears on the external monitor (may need to hit Fn+F5 or F&, to utilize both monitors), but not the system monitor, it's possible you've got a bad piece of hardware such as an inverter going out, or even the backlight failing.
If there's no image on either monitors, but you hear the usual sounds of windows booting up completely, it gets tricky.
First think is to update to most recent bios.
Floow the directions from the Lenovo site for the T20. Use the floppy image; it's just easier.
Let us know how it's going.
I would say you either have a damaged inverter board or screen baclight lamp. Usually the inverter board fails in one of the following ways:
1. When you turn on the laptop, the screen lights up for a short period of time and then goes dark. You still can see an image but it is very dark, almost invisible and definitely not usable. When you restart the laptop, the screen lights up and then goes dark again. The laptop works fine with an external monitor. 2. Your laptop turns on but the screen remains dark all the time. You still can see a very dim image outline. The laptop works fine with an external monitor. 3. The laptop screen works fine for hours or even days, but sometimes it goes very dark as it mentioned above. When you restart the laptop, the screen works fine again.
Inverter failure symptoms are very similar to backlight lamp failure symptoms and in most cases you cannot tell which one is causing the problem until you replace either the inverter board or the backlight lamp. From my personal experience, inverter boards fail more often than backlight lamps. If you have to guess, replace the inverter first.
the lcd screen may be causing this. Try to connect the laptop to an external monitor and have both working at the same time by toggling Fn F8 on the keyboard. Wait until it goes black on the LCD. post back what happens. If the external monitor wont go out when the lcd does, the lcd may have to be replaced. If the monitor goes out too, it's a video card issue which may be resolved by reinstalling the driver.
I have had this before with my Dell Latitude C540/640. I don't know the ACER 5720 but here's a couple possible fixes for you.
1. Press the function key ( "fn" key, generally a blue key or blue lettering and usually in the bottom left corner of your keyboard) and press F8 (may be a different key on your laptop, again, not familure with the acer. The key usually has either CRT/LCD printed on it, or two monitors on it, one its just an outline of a monitor and the other is filled in. This will run you laptop through the three monitor options it has. (LCD - LCD & External - Just External)
2. Try closing and opening the lid of your laptop. Sounds a bit strange but it works sometimes for me. My guess is when you close you screen it would "dim/turn off" the LCD and re-opening it convinces it to turn the screen back on.
If there are any horizontal or vertical lines in the display and you are able to get some picture try checking the lcd inverter located on the bottom of the display screen. In some cases, the screen goes black.Its easily accessible from taking off the bezel around the display. If needed you can recommend a tech to help install. I had a laptop that had the same problem and I touched the inverter and the lines disappeared. Sometimes the display or inverter has a poor connection from the lid opening and closing but that's not always the case.
Firstly, the LCD+external setting will switch one or the other or both on.
Secondly, if you go into your display properties (or even the advanced page where your video card additional features are) you can usually select which monitor is "primary".
I suspect that your external display is primary, and the LCD screen is not "enabled" or used as part of the desktop.
The settings are all there, it's just a matter of finding them (depending on what video card is in whatever laptop you have)
This might have happened in the first place if you accidentally hit "Fn" and one of the "F" keys up the top. Fn + F6 on my laptop will switch LCD/external monitors on and off. (for example) There is usually a little blue picture on one of the "F" keys to denote that function.
1.What I need you to test is...When laptop monitor go grey try plug external monitor and see that it work fine or not ??
2.Incase it work fine try to give a little tap behinde the laptop monitor and see that any changes...keep try and harder and see
3.Incase if you gave a hard tap also and its still the same but external monitor work fine then....I think you have problem with your LCD monitor coz there are chips that control the LCD crystal and maybe when it goes hot it behave this way....in this case you can't change the chip...you have to change the LCD.