Question about HP Compaq nx7300 Notebook

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Screen went blank/black

L was just getting ready to type something on word and my screen went black. the lock key is flashing and the power is on but the screen is black what do l do?

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Re: screen went blank/black - HP Compaq nx7300 Notebook PC Laptops


Posted on Dec 13, 2007

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My laptop screen is black and caps lock and scroll key are flashing

That is a security configuration on HP Laptops, depending on the way they blink is the problem your machine has.

Here is the web page where this info is posted, in case you need more info, hope this helps you to determain.
This document pertains to HP Notebook PCs with the HP Unified Extensible Firmware Interface (UEFI) beginning in late-2008. On startup, you may see a blank screen. If the diagnostic utilities detect a specific problem with hardware components, the fan turns on, but the screen remains blank. To help identify the cause of the problem, various LED lights on the keyboard blink a series of codes. The diagnostic utilities use the LEDs near the Num Lock or Caps Lock keys to blink a series of error codes. At the end of the series the blinking stops. The pattern of blinks will occur any time you attempt to start the computer until the error is resolved. Battery power LED blinks The Battery power LED indicates the condition of the power supply. When starting the computer, or when the computer is in operation, use the chart to identify the power condition. Battery Power LED Component Tested Error Condition Battery power LED off, and Caps Lock/Num Lock off Battery or AC Adapter AC adapter not connected or failure

Battery low charge or failure Battery power LED blinking Battery Insufficient charge on the battery When new computer is used for first time, the white LED light for the AC power connector blinks. Battery is still in "Shipping Mode", the light continues to blink even when AC power is connected.

To resolve, turn off notebook, connect AC power and allow battery to charge for at least 30 minutes, then start computer. LEDs near Caps Lock and Number Lock keys blink when starting notebook The LED lights near the Caps Lock and Num Lock keys will blink if an error is detected during the start up process. The LEDs will blink a number of times in a sequence and then stop. The number of blinks in the sequence indicates what component caused an error when it was being tested during start up. If the LEDs stop blinking and the computer does not start, you can press the power button again to repeat the tests. Count the number of blinks, and use the chart to identify the error condition. Knowing the number of blinks is helpful when you contact an HP support agent for technical help. Caps Lock/Num Lock LED Component Tested Error Condition LEDs blink 1 time CPU CPU not functional LEDs blink 2 times BIOS BIOS corruption failure LEDs blink 3 times Memory Module error not functional LEDs blink 4 times Graphics Graphics controller not functional LEDs blink 5 times System board General system board failure LEDs blink 6 times BIOS BIOS authentication failure

Dec 01, 2011 | HP PC Laptops

1 Answer

Have dell inspirion1525. Screen is black. By holding down fn key and start key i get flashing lock with 9 and blue lock wih an A and blue lock with a down arrow. What do these mean?

Well the Flashing "lock with 9" is Num Lock, the "blue lock with an A" is Caps Lock, and the "blue lock with a down arrow" is Scroll Lock. Hope that answers that question.

Now for the screen being blank usually means there is an issue with either your LCD display or an issue with the laptops video card. Plug in an external monitor and boot up the laptop if you still get a blank screen then there is an issue with the laptop's video card. If you can see your screen on the external monitor then there is an issue with the connection of the LCD displayon your laptop. You can try ifxing it your sleve by opening up the laptop and making sure the connection is firm or you can take it somewhere to get it fixed.

Please rate if this helps

Mar 15, 2011 | Dell Vostro 1500 Notebook

4 Answers

Good day.. my compaq presario powering on but blank on the screen and caps lock and num lock blingking only..thanks

Hello good day,sir
My compaq presario powering on but blank on the screen and caps lock and num lock blingking only.I try ready so many time but everything are not meaning for me that's why i need your help,sir.please,give me some advice for power back.
Thank sir.

Feb 18, 2011 | HP Compaq 6735s Notebook

1 Answer

Blank screen when turned on, then there are 2 lights that flash they both have a lock symbol before them one is with an A and the other is with a 1. Everything else lights up but screen is just blank/black

follow these steps & ur issue might get resolved(80% chances):
turn off ur notebook-->take out the battery-->disconnect the charger if its connected to the notebook-->now press & hold the power key for atleast 20 seconds, remember that u have to press & hold the power key & dont release the power key till 20 seconds are over--> & ensure that the notebook is not connected to any power source while u r performing this step niether the battery nor the charger--> also there shouldn't be any peripherals connected to the notebook-->once 20 seconds are over & u have released the power key-->connect the battery & the charger back to the notebook & now try to turn on the notebook-->u might not get a blank screen & ur issue might get resolved....(This whole step is known as power drain & it is done to remove the extra static electricity which sometimes get stored in the notebook & gives a blank screen in return.)

Jul 08, 2010 | HP EliteBook 6930p Notebook PC

2 Answers


i have this problem 2 days ago.. and this works on me... maybe on your's too

you may need to flash your bios. why need to flash the bios.. ? 1. had the black screen of death. or deleted the bios

how to flash the bios:

STEP the AA1 BIOS from this link:

2. extract the file
3. rename the file 3309.fd to zg5ia32.fd
4. put zg5ia32.fd and FLASHIT.EXE onto the usb drive

now, start the process

A. make sure the power cable is in
B. the laptop is turned OFF
C. Plug the usb stick in!

Press and HOLD down the FN and ESC key together
then press the power button, while holding the buttons

release the power button and continue holding FN and ESC for about 5 seconds
release the buttons and the power light will start to blink
let the laptop run and DO NOT PRESS anything this can take upto 8 mins
when it's done the laptop will restart.

this works on me... good luck.. and i hope it will help you.....

Jun 15, 2009 | Acer Aspire One PC Notebook

1 Answer

Blank keys working


is the acer still covered by the warranty? you can get it repaired for free if it is, its a common fault with these, my friend over here in finland has one of those and it did the same thing, he got it replaced / fixed for free since it was under warranty. get yours fixed also.

May 12, 2009 | Acer Aspire One Netbook 8.9" Notebook

2 Answers

Blank keys working

You broke it! Try re-installing OS software, hoping you still have the CD disk.

May 10, 2009 | Acer Aspire One Netbook 8.9" Notebook

1 Answer

Blank Screen

First, confirm that it is the screen itself. Connect the video output to a known working monitor and then power on your Thinkpad. if the known working monitor behaves the same way you can rule out the laptop's monitor as the source of the problem. This may be the BGA, Ball Grid Assembly, leadless soldering problem related to video chips on the motherboard, but first test the monitors.

Apr 15, 2009 | IBM ThinkPad R51 Notebook

4 Answers

Black blank screen of my Acer aspire one notebook 
copy this link in your browser and download file
Step 1 
Unzip the attached file "" & Copy file name  " zg5ia32.fd " and " Flashit.exe " to one USB flash disk i.e USB Pen drive 

Step 2 
a. Connect the power adapter to laptop 
b. Insert USB flash disk i.e Pen drive to one USB port of As One Laptop 
c. Press keys   Fn + Esc + power button simultaneously 
d. Release the power button key when power button LED glows. 
e. After LED of power button starts flashing release the keys Fn + Esc 
f.  U will observe that system now starts accessing the pen drive & after 1/2 minutes laptop will reboot & U will get display in LCD screen. 

Jan 12, 2009 | Acer Aspire One PC Notebook

1 Answer

Dell 6400 will not start

have you tried going to safe mode? or safe mode with networking? you can also try to run chkdsk /r on the recovery console,to do this,insert your xp cd,restart,press f12 to go to the boot menu,choose cd/dvd rom,press any key to boot to cd,after loading,press R for repair to go to recovery console,choose number 1 for the windows installation folder,leave password blank, type chkdsk /r press enter, this will take a while,after that type fixboot,press enter,continue, press Y,you might also try to run diagnostics first by pressing FN and Power button at the same time while its off,if it cant find the diagnostic partitition,you can boot to your resource cd or drivers and utilities cd

Dec 14, 2008 | Dell Inspiron 6400 Notebook

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