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Black screen, lightbulb indicator lit on right edge

Caps lock, f2, and power keys are all lit

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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.

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&lc=en&dlc=en&cc=uk&lang=en&rule=26781&product=3816592
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 Computers & Internet

1 Answer

Hi my samgsung n150 keyboard has a problem when i type letter o it come 6 then i type letter l it become number 3 pls help me..tnx


If you look at the keys in question, you will notice that the U has a 4, I has a 5, O has 6, J has a 1, K has a 2 and L has a 3. These keys are part of the embedded numeric keypad that is turned on when NumLk is on. On the keyboard (usually at the top edge beside the Caps Lock indicator) is a NumLk indicator that looks like a little padlock with a number in its middle. It will be lit or a led directly under it will be lit when NumLk is on. To turn NumLk on or off (toggling) usually requires pressing and holding down the Fn key then momentarily pressing one of the function keys at the top edge of the keyboard which has the letters NumLk on it.

Apr 30, 2011 | Samsung N150 (36725723009) Netbook

1 Answer

Shut down my Acer 2480 wrong by pressing the power button. Now it doesn't reboot or boot up. I tried to pressing F2 to reboot but it doesn't do anything. Any suggestions?


Look at the power indicator:
If it is not lit, no power is being supplied to the computer. If the computer has a battery, it may be low and unable to power the computer. Connect the AC adapter to recharge the battey pack and make sure the AC adapter is properly plugged into the computer and to the AC power outlet.
If the power indicator is lit, check if a non-bootable (non-system) disk or USB thumbdrive is in the computer. If so, remove it and press Ctrl + Alt + Del to restart the system.

Pressing F2 by itself is only used to enter the system's BIOS on startup. If the power indicator is lit but nothing appears on the screen - The computer's power management system automatically blanks the screen to save power. Press any key to turn the display on.
If pressing any key does not turn the display back on, check the following....
1. The brightness level might be too low. Press Fn and the right cursor key to increase brightness level
2. Display device might be set to an external monitor. Press Fn and F5 to toggle to the internal display
3. Backlight might be turned off. Press Fn and F6 to turn on the backlight.
4. If the Sleep indicator is lit, the computer is in Sleep mode. Press & release power button to resume.

Apr 03, 2011 | Computers & Internet

4 Answers

Is there any way to brighten my screen on my acer aspire 5601 lap top


Examine the keyboard. There should be a symbol on most of the function keys (F1, F2, etc.). Look for one that looks like a sun or lightbulb, either with an arrow pointing up or with the sun/lighbulb filled in. Hold the 'Fn' key, and tap the up/bright sun/lightbulb key a few times. The screen should increase in brightness.

If you cannot find the specified keys, you may be able to adjust brightness from inside Windows. Right click on the battery icon in the taskbar and open 'power options'. Look for a sun and moon with a sliding bar between them. You might also be able to adjust brightness by customizing your desktop (right click on the desktop and look for the proper menu).

Mar 22, 2011 | Acer Aspire 5600 Series 5630-6951 Laptop

1 Answer

My Logitech EX110 wireless keyboard has no light indicators for CAPS LOCK and NUM LOCK. Should it have those indicators?


Your EX 110 receiver has 3 indicator lights (LEDs) that display the status of the Caps lock, Function key, and the Num lock during normal operating mode. These lights will also flash when the connect button on the receiver is pressed.
LED A: Indicates that the Caps Lock (Capital lock) key is on when lit.
LED F: Indicates that the F keys are in Standard F Keys Mode when lit and in Enhanced F Keys Mode when the LED is off.
  • Your EX 110 keyboard has an Enhanced F Keys Mode for F keys that provides additional functions you can program. See Knowledge Base article 9526.
LED 1: Indicates when the Num Lock (Number lock) key is on. This function allows the number pad to produce only numbers

Mar 27, 2009 | Logitech EX110 SP CORDLESS Keyboard/Mouse

1 Answer

Dell Inspiro 6400 not starting up


If the Num lock is lit constant, and the Caps Lock and Scroll Lock keys are flashing, the system is reporting a memory error. Power off the system, remove the battery, and follow the user manual from support.dell.com to reseat the memory module(s). If the error persists, you may need to replace the memory and/or the system board of the portable.

Mar 12, 2009 | Dell Latitude D600 Notebook

2 Answers

Cap Lock on or off


Your EX 110 receiver has 3 indicator lights (LEDs) that display the status of the Caps lock, Function key, and the Num lock during normal operating mode. These lights will also flash when the connect button on the receiver is pressed.
LED A: Indicates that the Caps Lock (Capital lock) key is on when lit.
LED F: Indicates that the F keys are in Standard F Keys Mode when lit and in Enhanced F Keys Mode when the LED is off.
  • Your EX 110 keyboard has an Enhanced F Keys Mode for F keys that provides additional functions you can program. See Knowledge Base article 9526.
LED 1: Indicates when the Num Lock (Number lock) key is on. This function allows the number pad to produce only numbers

Feb 11, 2009 | Logitech Cordless Desktop EX110

2 Answers

How do I get a "CAPS LOCK" indicator or light to appear?


Most keyboards now a days usually tell you on screen whether or not the caps lock is on but its possiblbe that when you press the key yowards the left or right hand side a light goes on or possibly in the top center if this is not the case then you may have a faulty keyboard.

Nov 27, 2008 | Microsoft Wireless Laser Desktop 4000...

2 Answers

Black screen only.


1. Windows reinstall thru CD ( crashed graphic drivers )
2. screen itself faulty

Jun 07, 2008 | Toshiba Satellite P35-S611 Notebook

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