cleverm67 :
My Hp 6570b laptop is not powering up,When l press the power on button cap and num lock keys blinks 3times and stop and proceed again ,then the fane started running.No display is shown on the screen
I tried to use an external monitor bt nothing shown up
I also tried to remove the ram cards and inserting them again nothing changes
I wl b glad if u assist me
That's a Hardware issue you've got there.
try follow this guide:
https/support.hp.com/us-en/document/c01732674
try this as well:
First thing to do (as suggested by HP also) is: turn off your PC, unplug the charger, take out the battery, then open the RAM slot.
Take out the RAM and disconnect the wireless card.
Press the power button at that point, and keep it pressed for like 30 sec.
Reassemble it all and try to boot.
It may be a power problem or BIOS failure. Try this out; afterwards, it should be OK.
If that does not work, the worst scenario is that you just reset your BIOS from CMOS by taking out the small battery behind the RAM modules for a few seconds.
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
HP notebooks key to blinks on startup - HP says 1 blink = CPU problem, 2 blinks = BIOS, 3= Memory issue, 4 = Graphics, 5 blinks and it means your system board is dead, 6 blinks = BIOS problem.