My laptop hp 6735 some times is working some times isn't only two locks a and b are blinking what is the problem?

HP Notebook PCs - Troubleshooting LED Blink Codes or ...

h20564.www2.hp.com/hpsc/doc/public/display?...na...

Hewlett?PackardHP Notebook PCs - Troubleshooting LED Blink Codes or Beep Codes During Startup or Boot ... HP Pavilion and Compaq Presario notebook computers built in 2009 or later use blinking LEDS to identify ... Press the power button to turn on the computer, and look for blinking LED lights on the keyboard. ... Continuous blink.Missing: green ‎nc6320

HP Notebook PCs - Computer Does Not Start and Emits an ...

support.hp.com/us-en/document/c01732674

This document pertains to HP and Compaq notebook computers. .... light next to thepower socket or the light on the AC power adapter and note its condition: off, blinking, or constantly on. ... Battery power LED off, and Caps Lock/Num Lock off.Missing: green ‎nc6320

HP 6735s won't boot, power LED blinks 7 times - HP ...

Yes! judging by all the cascade break downs, I would suggest replacing the motherboard, HP has a history with motherboard issues.

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

the number of times the num lock (1) and caps lock (A) blink will indicate where the failure is, but I would try removing and re-seating the RAM as a first fix!

No. The 6735 doesn't have a physical button the light that indicates the wifi IS the button it's a touch sensitive light, similar to your volume control up there.

Hi,

Most likely the problem is the Hardware on the machine. I suggest try to count how many times the Caps Lock flashes it indicates what hardware already failed.

When HP laptops don't boot but blink the scroll and caps lock lights it usually means there is a problem with the motherboard or RAM. The ram can usually be removed from the bottom of the laptop with relative ease. Before removing the RAM or doing any work on the laptop please make sure that it is unplugged and the battery has been removed. Locate the door pictured below and unscrew and remove it. The ram is held in by two prongs putting pressure on the chip from either side. Push the prongs out and the ram should slant forward, out of the machine. Carefully remove the RAM and clean the connectors gently with a pencil eraser. Carefully put them back in and back between the pins. Place the door back on and screw it back in place. Try rebooting the laptop. If you don't feel comfortable doing this or if the issue is one with the motherboard, and your laptop is still under warranty you may want to call HP. If it is under warranty HP will most likely repair your machine free of charge.

First you need to determine how many blinks you are getting when you try to power on the laptop. Check the blinking codes below and reason behind that for HP Compaq laptops Blinking battery power LED Battery Insufficient charge on the battery Blink: 1 - Caps Lock/Num Lock - CPU CPU not functional Blink: 2 - Caps Lock/Num Lock - BIOS BIOS corruption failure Blink: 3 - Caps Lock/Num Lock - Memory Module error not functional Blink: 4 - Caps Lock/Num Lock - Graphics Graphics controller not functional Blink: 5 - Caps Lock/Num Lock - System board General system board failure Blink: 6 - Caps Lock/Num Lock - BIOS BIOS authentication failure Well Check for the below link it will provide you the steps which you need to perform to isolate the cause so that we can determine which hardware of the laptop is causing this issue. http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01443366&cc=us&lc=en&dlc=en You need to first Remove the memory module (RAM)- Try to power on the laptop ? then again reset it and try to power on. Check whether it is coming on or not. try the same procedure with Hard drive. If laptop is getting power on after removing one of the device then we can be sure that that particular device is faulty and we can change that then? Let me know if you find any difficulties doing this.. I hope this will help you to get it work. Plz vote for me..Dreamkam

Hello
If you have gone to Start > Control Panel > Hardware and Sound > Mouse in the settings for scroll lock and it stills doesn't works
and you have gone to synaptics touchpad properties and still nothing
you should try download the synaptics touchpad driver and install it from here
http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=3687622&prodTypeId=321957&prodSeriesId=3687621&swEnvOID=1093&taskId=135&swLang=13#11318

besides the beeps which indicate a motherboard timing issue. There should be LED blinking codes given on the front LEDs. I will include the blink codes below, but lets try to at least get the system up and running. First, I would like you to remove the RAM sticks from the laptop and just reseat one stick back in the machine. Try to boot with that one stick, if it does not, try the other alone. There have been issues when reseating the ram or re-installing it have temp. fixed the issue. If it does reboot, go to the HP support site, put in your model number of your laptop and download and install an updated BIOS. Below are the blink codes that may narrow down the problem.....

HP DV6000 LED Blink Codes

LED Component Error Condition
Blinking battery power LED Battery Insufficient charge on the battery
Blink: 1 - Caps Lock/Num Lock CPU CPU not functional
Blink: 2 - Caps Lock/Num Lock BIOS BIOS corruption failure
Blink: 3 - Caps Lock/Num Lock Memory Module error not functional
Blink: 4 - Caps Lock/Num Lock Graphics Graphics controller not functional
Blink: 5 - Caps Lock/Num Lock System board General system board failure
Blink: 6 - Caps Lock/Num Lock BIOS BIOS authentication failure