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Honor Student
Cuongvd
Posts: 4
Member Since: ‎01-27-2013
Message 1 of 8 (8,135 Views)
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A problem with Probook 4540s BIOS!!!

I have probook 4540s laptop, two day ago, i updated the BIOS. I dowloaded the BIOS from http://h20000.www2.hp.com/bizsupport/TechSupport/SoftwareIndex.jsp?lang=en&cc=us&prodNameId=5269095&... After that, i couldn't turn on my laptop. It just have had blank screen and Caplock light blink 3 time. Can you help me!!!

Honor Student
Cuongvd
Posts: 4
Member Since: ‎01-27-2013
Message 2 of 8 (8,111 Views)

No one help me :((

No one help me :smileysad:(

Regents Professor
Cloud_Strider
Posts: 5,568
Member Since: ‎09-23-2010
Message 3 of 8 (8,106 Views)

Re: A problem with Probook 4540s BIOS!!!

[ Edited ]

The following was taken from here.

 

Code descriptions

Use the following table to learn about the meaning of a code that your computer may encounter.
Code type Number of Blinks or Beeps Component Being Checked Condition Possible solution(s)
AC power adapter LEDConstantly onPower adapterOK. Power is being supplied.None. The power adapter is likely not the problem.
AC power adapter LEDConstantly offPower adapterPower is not being suppliedTry a different power outlet.

Replace power adapter.
AC power adapter LEDContinuous blinkingPower adapterInsufficient powerTry a different power outlet.

Replace power adapter.
Caps Lock/Num Lock1CPUCPU not functionalReseat replace CPU.

Service
Caps Lock/Num Lock2BIOSBIOS corruption failureRestore BIOS from onboard backup (jumpers)

Service
Caps Lock/Num Lock3MemoryMemory module error not functionalReseat memory modules (see next section).

Test memory from UEFI or BIOS.

Replace bad memory modules.

Service
Caps Lock/Num Lock4GraphicsGraphics controller not functionalService
Caps Lock/Num Lock5System boardGeneral system board failureService
Caps Lock/Num Lock6BIOSBIOS authentication failureRestore BIOS from onboard backup (jumpers)

Service
BeepVariesVariesVariesReseat memory modules (see next section).

Service

For more detail on the exact code, search the Internet for "beep code" and the manufacturer of your BIOS - such as AMI or Award.

 

 

The caps lock blinking three times indicates it is related to the RAM.

You can try disconnecting everything including the battery and the AC charger, holding the power button for one minute, and then turning it on.

 

If that does not help, then you can try removing each RAM module and trying with them one at a time. 

 

Page 60 of this guide details how to remove the RAM should you need it.

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Honor Student
Cuongvd
Posts: 4
Member Since: ‎01-27-2013
Message 4 of 8 (8,096 Views)

Re: A problem with Probook 4540s BIOS!!!

Thanks a lot!!

 

But i replaced a RAM from another laptop, and it's still not working. Ạnd when i put the RAM to laptop of my friend. It worked normally. I think it is not a RAM error.

Regents Professor
Cloud_Strider
Posts: 5,568
Member Since: ‎09-23-2010
Message 5 of 8 (8,091 Views)

Re: A problem with Probook 4540s BIOS!!!

Have you tried one RAM module in each slot or was both slots used at the same time?

RAM issues can either be with the RAM itself or the RAM slots on the motherboard. 

 

In the event that the POST test is wrong, although rare, you could try restoring the BIOS using the steps in this document.

You will need the UEFI Support Environment download to create the recovery USB drive.  It can be found here.

 

Let me know what happens.

 

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Intern
MasterUMC
Posts: 92
Member Since: ‎08-23-2009
Message 6 of 8 (8,079 Views)

Re: A problem with Probook 4540s BIOS!!!

If you're in the USA, you're going to need to contact a 3rd party BIOS repair facility like AQSTECH 

 

Probook / Elitebook BIOS recovery / repair is not easy.

Honor Student
Cuongvd
Posts: 4
Member Since: ‎01-27-2013
Message 7 of 8 (8,061 Views)

Re: A problem with Probook 4540s BIOS!!!

Thanks 

Regents Professor
Cloud_Strider
Posts: 5,568
Member Since: ‎09-23-2010
Message 8 of 8 (8,039 Views)

Re: A problem with Probook 4540s BIOS!!!

You are most welcome.  I am glad it is up and running once again. 

 

Thanks for letting the community know what the solution was.  :smileyhappy:

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