Question about HEWLETT-PACKARD Hewlett Packard PROBOOK 6555B N530 25G 2GB 320GB DVDRW 156IN W7P 32 OR07 PC Notebook

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Screen is black; cannot get anything to display Have tried to reboot several times; pressesed Fn+f4 Any suggestions? Thank you! Nancy

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Turn it off, take out the power supply and battery. Now open it and take out the button battery. With those things out, press and hold the power button for 10 seconds to drain residual charge. try to boot it up. It should work now

Posted on Mar 30, 2011

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I have the asus notebook PC x551 and when I tune it on my login screen pops up, login and nothing i get a black screen and can not do anything? How do I fix this so my labtop works again?


Were you using an external display, or maybe somebody clicking keys? Sounds like it's trying to send the screen to an external device. On my laptops, holding the "Fn" key down, and tapping the f4 key is the switch for that. It can take a few seconds for it to switch. If f4 isn't it, try other f keys.

Sep 12, 2014 | Computers & Internet

1 Answer

What's your protoshiba satellite A205-S5880 display function keysblem?


Remove the battery. Keep pressed power button 30 seconds. Reinsert the battery. Try again.
If not let it start like this - black screen. And press ONE TIME FN and F5 until the screen comes back again. OR FN and F9.

Apr 11, 2013 | Toshiba Satellite A205-S5880 Notebook

2 Answers

My daughter was trying to change her background pic and the color and look of the taskbar. Now the screen loads black and you can see nothing that you click on.


its a long shot but try Fn/F4
Fn is a hotkey function key that in combination with some other keys provides more options on the keyboard Fn/F4 puts the screen in sleep mode.

Jul 20, 2011 | Dell Computers & Internet

1 Answer

Laptop comes on but screen is black/blank


If you don't see anything at all and it has not been dropped or banged it maybe something as simple as the Video out selection. Look at the keyboard and locate the [FN] and the [F4](Actually look for the key with a small video screen on it which is usually the F4 on HP machines). After turning the computer on press and hold the [FN] key then press the [F4] Key. There are 3 modes programmed into the video selection. Computer monitor, Computer monitor and External Display and External Display only. What happens a lot of the time is someone may have accidentally pressed this combination of keys and the video is actually redirected to the external monitor only option. If this does not help and you can connect the computer to an external monitor and use that key combination to get the output to that screen then the problem is most likely the Back light for the monitor of the screen itself. Both can be replaced. HP can provide the back light part at a reasonable price. For the screen itself I recommend you go to someplace like E-Bay and purchase the replacement. Make sure you look at the sellers past record so you don't get taken. I DO NOT recommend using Craig's List for anything.

Feb 17, 2011 | HP Pavilion dv9000t 17" Notebook Laptop PC...

1 Answer

Cannot conect presario V4000 to projector


Set your screen-resolution to 800-by-600 at 60 Hz.
Then, use Fn-F4, to see if the projector accepts 800-by-600 input.

Apr 10, 2010 | Compaq Presario Notebook

1 Answer

I have a hp pavillion dv2315nr laptop with a black screen. In the past, I was always able to resolve the issue by pressing fn/f4 at start up which worked but takes a long time to kick in. Now however...


when you power up the press F8 key then enter in enable vga mode then go to control panel ->display ->settings ->change screen resolution to 1024*768 then apply and ok then restart .
Thanks for using fixya.
Please rate solution if it helps.

Jul 25, 2009 | Computers & Internet

2 Answers

Black Screen


Have you tried cycling all the way through the options with the F4? Most laptops toggle in a manner similar to: 1) Laptop only, 2) External display only, 3) Both displays, 4) Back to Laptop only (cycle repeats).

Jun 28, 2009 | Toshiba Satellite L300D-ST3501 Notebook

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Which function key allows to switch to tv


Hi there,
You need to press hold the FN key and press the F4 function key once which toggles the display to the External Display source like the television connected along with the LCD of the Notebook.
If the FN and F4 key combination is pressed again, the display will dissappear from the LCD of the Notebook and remain only on the external source.
If the FN and F4 key combination is pressed third time, the display will be back on the LCD of the Notebook and will not remain on the External display source.
Here are these details in other way :
First time pressing FN + F4    ---> Display on LCD and External display
Second time pressing FN + F4 ---> Display not on LCD but on the External Display
Third time pressing FN + F4 ---> Display back on the LCD and not available on External Display (Normal position).
Below are the details of what the Function keys in your DV1000 Notebook work :
fn + f1 Opens Help and Support Center fn + f2 Opens print options window fn + f3 Opens default Internet browser fn + f4 Switches the image among displays fn + f5 Initiates Standby fn + f6 Initiates QuickLock fn + f7 Decreases screen brightness fn + f8 Increases screen brightness fn + f9 Plays, pauses, or resumes an audio CD or DVD fn + f10 Stops an audio CD or DVD fn + f11 Plays the previous track or chapter on an audio CD or DVD fn + f12 Plays the next track or chapter on an audio CD or DVD fn + esc Displays system information.* (*To clear the system information display, press esc.)
Hope this helps...

Oct 11, 2008 | HP Pavilion dv1000 Notebook

2 Answers

Screen Blackout


u must be having problem in output display driver,,,try replacing it

Oct 31, 2007 | HP Pavillion ZV6000 Notebook

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