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My screen on my hp laptop cracked, ibaught a separate computer screen so icould hook it up to the laptop and still be able 2 use it. i have connected them earlier. but i just got done installing an internet virus software which recommended me 2 restart my laptop. when i tried 2 turn it back on,the laptop came on but it didnt want 2 send the signal out 2 the external monitor. i tried pressing the function key and the f4 key at the same time but that didnt work anymore either. the screen on the laptop isreally bad, and there is no way that i could use it in order 2 change any of the settings. i dont know what else 2 do. do u have any suggestions?

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  • roxanabranna May 14, 2009

    I tried all the other Function keys that you recommended i try and that still didnt work. I do have a question tho, is there any way that i could of somehow locked the Fn + F4 key on the keyboard to where it wouldnt work anymore. I remember right before this problem occured, this weird box popped up on the bottom right hand side of my external screen, it displayed like two monitors and some kind of transfer arrows inbetween them. I hit the one on the right thinking that this would always display the screen onto my external monitor only. Im wondering if this process did something to where it disabled the Fn + F4 key to where i would have to manually change the settings only off of the actual laptop's screen? Is there any way that i could over ride this operation and restore the original settings back to where they were at in the beginning?

    Thank you,



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The only way to change the display options to direct the viewing to the external monitor is to do it on the bad LCD screen. this is impossible, due to the fact that, the original LCD screen is ruined. you will have to send the laptop to a repair depot or the manufacture for the LCD repair.

Posted on May 15, 2009

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It seems that the laptop stopped sending the signal to your external monitor. Even pressing the Fn + F4 didn't work.

Here's what you're going to do:

1. Connect first your external monitor into different computer to make sure that the monitor is still functioning correctly.
2. Disconnect the external monitor from the laptop and then restart again the laptop without the external monitor.
3. If you notice that the laptop is fully booted up, connect the external monitor and wait for couple of seconds.
4. Press Fn (Function) + F4 and see if that would work.

If the external monitor will not work after Fn + F4, try pressing Fn + F5; Fn + F8. These are the key combinations for transferring the signal for the external monitor.

If none of those steps work, you need to bring your laptop to the computer repair shop. Defective LCD should not affect transferring of signal to the external monitor.

Here, I provided you the link where you can bring your laptop if in case you need to repair it:

Have great day!

Posted on May 09, 2009

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