Caps Lock and Num Lock LEDs blink continuously, can't get to BIOS

press with you palm on the center of the keyboard especially at the area 'T,Y,U,I,O,7,8,9'. This is due to the GPU socket loose.

Give it a little TLC. Kinda like administering CPR chest compression's but, much more lightly and gentle. Pressing with you palm on the keyboard area keys T,Y,U,I,O,7,8,9. It really works!

Check your ram modules.

It is either loose or they are dead.

Remove the Ram modules, wipe it with a lint free cloth, put it back in and see if the laptop is working.

If not you will have to replace the ram module(s).

I have been a tech for over 40 years, and I'm telling you that overheating the laptop is NOT going to cause the solder to melt, or the joint to work. In fact, when troubleshooting a thermal problem, the opposite is true. "Cold solder" connections FAIL as the unit heats up. To isolate the problem, a freon spray is used to cool suspected areas to see if the problem disappears. So all these posts all over the forums regarding this machine that claim overheating the unit causes bad solder joints to to reconnect temporarily are WRONG ! I have no doubt that this method does sometimes get the unit to temporarily boot, but not for the reasons they claim. I do not know the reason for the original failure, nor why overheating the unit gets it to boot, but I suspect a fan issue, or some other error message being sent to the cpu that stops the start process. One of my ram cards slot is extremely loose, and the machine doesn't react differently if there is 1,2, or no ram cards installed. I will continue trying to isolate the problem, but I suggest if you want to recover data on the HDD, get an external hook up and do it right, not by frying you laptop further !

For three blinks: Remove battery for few mints and reinsert it. During boot process press shift+ctrl+alt. It worked in my laptop (cq40) many a times. Although it is not my idea. I read it somewhere (can't recall). But it worked. Just removing battery and pressing any other buttons did not work in my laptop.

For four blinks: I removed RAM and inserted it again. Laptop started.

You have burnt out the Graphics chip on it, i am amazed it has lasted this long as these model are prone to gpu failure.

Simply put.

Under the gpu there are small balls or solder prob 200 of them and a few have melted and joined together shorting out the chip or the heat has lifted a section of the chip, same result dead gpu.

Wrapping it in a sweater just heats up the solder until it turns back to a semi fluid and the solder balls reflow back to the correct position.

Pressing on the keyboard also does exactly the same thing as in that instance the chip has lifted and you are just pressing it back down.

Eventually the solder will fail completely as HP are renowned for using cheap chips and even cheaper solder ( other manufacturers are also available).

You need to have the gpu reballed or replaced, NOT reflowed.

The HP DV, TX, CQ and now the G6 and G7 series all suffer from gpu failure.

happened to me too. i disassembled my laptop with no luck. i found out later that removing the SD card i had inside solved the problem.

I have same issue from time to time (and it's happened several times) with an HP DV7, numlock and caps lock start flashing. All I do is unplug, remove battery for 2 or 3 minutes, re install battery, voila! I have never had to disassemble anything else.

On my HP8530w, the capslock and numlock leds blinked 3 times, periodically. It was miraculously solved by the first proposed methods: removing batter, ac power, bios-battery AND wireless card (under the keyboard, near letter B) and pressing the power button for 30 seconds. After reassembling, the bios seemed to be reconfigured and booted normally afterwards!

I have a Compaq Presario CQ61 that was upgraded to Windows 10 a few months ago, which is when my problems started. My Num and Caps lock keep blinking w/o end and no POST beeps. I tried removing the RAM but no POST. I tried powering the laptop with only the AC adapter and then with only the battery and still only the flashing Num and Caps lock. What finally worked was holding down the Ctrl-Alt-Delete keys at the same time and then powering on the laptop. It booted right up and began installing Windows Updates. I'm wondering if the Updates had something to do with its behavior. Considering taking this laptop back to Windows 7 with a clean install and getting rid of this crappy Windows 10 once and for all.

I found that the memory slot (memory bank) 0 - under the very first slot you see when you open - did not work. I just removed the memory from that slot and let the only one that worked fine and had the biggest memory inside the other slot. The notebook booted okay. But I did not find why just one memory slot stopped working... I will look at the motherboard to see the connections (bus) to the processor and check if there is a short circuit or something like that. Hope this helps.

check the blink codes, if the blink codes are a sequence of 1 and a long delay. that decodes to the CPU not funtional. it is either the cpu itself that is having the problem or the CPU socket is not working. in that sence you need to replace one or the other.

If it comes on and doesn't do anything but stay on the black screen, and caps lock keeps flashing, a weird trick to get it to come back on is to overheat it.

Wrap it up with sweaters or leave it on in your bag for about 30 mins and it will overheat and turn itself of due to the CPU overheating. Then it may come back on.

Its not a permanent fix, but it works for me. I use Sleep instead of Hibernate now and the trick works more often.

Got it from here:

http://h30434.www3.hp.com/t5/Notebook-Ha...

Glad that some of these fixes work. My problem, however, was a bad GPU connection after a hot summer. After trying everything else, I covered the vents with a cloth and let my G62 heat up for about 10 minutes - turn the computer off then on and it booted properly (GPU connection expand a bit & connects). Knowing this, I ordered an exact match motherboard for $50 from an ebay site and replaced it using a well-done youtube video for the G62. Learned a lot. Cleaned the fan and used high-quality thermal paste for CPU & GPU. It took some time and patience, but the computer is better than new. It helped that HP G62 series is common & MB was exact match shipped from China for free. I am no longer fearful of taking a notebook computer apart. I can give specifics to anyone who wants to proceed. - Peter

hi , thanks a lot!!! my hp envy m6 ts 15 sleekbook I5 4thgen ,no power on... only power button white and wireless amber ... 4 second up no video no fan no hd and power off.

i disambly completly and check all parts when assembly. and the error continue,,, i tried power on 200 times never up.

i read on your post... press gently on keyboard arround keys.... not work ... but the idea s very good! i tried every zone of keyboard with this method and not result.....

but ... when press with palm the sector of keys limited by 4 a 7 and function keys abvove... and all sector of speaker superior.... the power button still white and not turn off when past 4seconds...

i release the palm and poower button continue on white.... and then press it and power off .

i power on normaly , and advertice of cmos bios bla bla bla... and press enter reboot and my envy func ok !!

i suposse a soldering problem...

gracias from argentina

sorry for y bad english , i try to share my experience with us. thanks.

I have done everything written here, but my hp elitebook 8570p is still not booting to windows. And still blinks the caps lock and num lock 5 times before restarting. Can anyone help please

I’ve encountered similar issue with an older HP Elitebook 2540p - the notebook wouldn’t go to BIOS and restarted itself every 10 seconds or so. The LEDs blinked during each cycle. When I replaced CMOS battery (CR2032 type, it’s hidden under the keyboard), the notebook works normally again.

I encounter similar problem. Solved it by dismantling the laptop, locating the CMOS battery removing it. Waiting for 10 minutes, inserting it in and wow, it worked. My screen came back.

Hope this process works for you

Kindly help pressing the power button only the power, Internet and volume buttons light few seconds later the fans produces a lot of sound continuously, the screen does not light and the Led light below the keyboard at the sd area does not light at all

Dear Mr.

I have Lenovo g50-70 core i7 laptop. on my laptop the following error are occurred?

when, I press the power button it gives fan sound and display power light. but after some minute it become shutdown.

can You help me how can solve it?