My cq62 stopped working how can i get it started up again

Replace battery for Presario cq62


6600mAh 9 cells Compaq Presario CQ62 Battery Replacement Notebook Battery...

Your computer will not start up with out a BIOS working, it starts the hard drive and loads the operating system.

The CMOS memory stores parameters which are updated by the operating system. Hence it needs a battery to keep the parameters. It also needs the operating system to make any necessary changes to start up again.

I do not know your full model number, but this utility will check if your pc is bootable.

HP System Diagnostics UEFI

You can also find all the drivers, bios updates etc. on HP.com

those are blink codes, learn to count them.
if you pulled the CPU i bet you that you used the wrong heat sink compound.
The CPU shuts off all by itself if too hot. your job is to get the fan working and the heat sink working and that thermal compound right.
hp.com
as the blink codes we are not HP here, ever

https://support.hp.com/us-en/document/c02222922

have u tryd changing ram cards i had a computer do the same thing it worked for me

Hook a external keyboard to make sure it is working, if yes! the laptop keyboard will need to be replaced.

You cant

Please re install your on board graphics driver ( VGA driver ).

Please go to the manufacturer site for latest driver.

Hope this will solve your problem.

Fan has gone bad. Send back to Compaq for a warranty replacement

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