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Repair and support information for HP Laptops, designed for home and home office use.

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Blank Screen, Caps lock light blinks 3 fast 2 slow. Need help..?

I have a HP pavilion laptop model: 14- ce0505sa. Was working perfectly. I just bought it a year back. The problem started when Microsoft sent the update. It was booting up frequently and then after a few days when I tried to reinstall windows and clicked restart it went of..and frm then the black screen and capslock light beeps. I thought it's the ram but it works on someone else's laptop. Open to suggestions. Would appreciate it if someone could help me out in this. Cheers

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In my case laptop turn on, fan working but no display shown on screen. Only caps lock keep blinking. Tried to change rams, 15 to 20 second press power button after discharge the battery but no luck. Any one has been go through same situation. Once display come then can do something about bios. Tried external hdmi thought screen issue but no luck.


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What you need to do is boot from the Windows 10 Installation Media that you have.

# Insert the flash drive with the Windows installation files on it.

  1. For other: You can borrow someone else's Windows 10 install media if you need to. You're not installing or reinstalling Windows, you're just accessing Advanced Startup Options.

# Boot from the USB device.

# Select Next from the Windows Setup screen.

# Choose Repair your computer at the bottom of the window.

# Advanced Startup Options will start, almost immediately.

What you are looking for is Startup Repair. Run this a few times until Windows boots up correctly.

There are other options but this is a start. Driver issues could be part of the problem.

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How you can boot in cd or USB with the black screen how can you see that ..bugok


@secret identity It was just a first step in troubleshooting. There was no dialogue from the person which is how we know to check thire progress.


ha ha .. can't do anything with any Windows, cuz it does not get past the error code (flashes and or beeps !! totally useless info


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If you want to fix this issue so follow these Steps

Step 1: Power Off your Laptop and Remove the Battery

Step 2: Press Power Button with Window + B for 30 Second

Step 3: Restart your Laptop. after restart your laptop you can see Boot Device Not Found Error.

Step 4: Press Ctrl + Alt + Delete Keys after that press multi time Boot option key

Step 5: Go to Boot Option in Boot menu and Enable Legacy Support and press F10 for Save Setting.

for more information Click Here

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Just disconnect touchpad cable and keyboard cabale and reset bios.

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disconnection the mouse pad worked for me, When i reconnect it same error, disconnected laptop boots. Using a USB mouse works fine.


How do i disconnect those touchpad and keyboard cable, im using hp Elitebook 8470p


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Johnny Terence Rodrigues appears to be a BIOS error. The error indicates embedded controller has timed out waiting for the BIOS to return from system board initialization (end of POST).

 The blinks indicate system board failure on your PC.

 Try restoring the BIOS to default and check if it helps.

 1.    Turn off the computer and wait five seconds.

2.    Press the Power button to start the computer and repeatedly press the F10 key to enter the BIOS setup menu.

3.    On the BIOS Setup screen, press F9 to select and load the BIOS Setup Default settings.

4.    Press F10 to Save and Exit.

5.    Use the arrow keys to select Yes, then press Enter when asked Exit Saving Changes?

6.    Follow the prompts to restart your computer.

More about recovering the BIOS on here

Check here

for more info

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Only get caps lock 3 long 2 short. Esc, pwr+win+b, f10....none of that does anything. Should I start unplugging ribbon cables one by one and try to boot each time?

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I have the same problem 650 g6 ProBook HP laptop tried win+b esc f11 esc any one got luck same three long flash then two fast also num key appreciate any help in advance


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Johnny Terence Rodrigues will be eternally grateful.
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