No Boot After BIOS Update - No Fan, No Beep, Nothing

[HannahBB92]

Hi Everyone, 

I have a computer which I was trying to update tonight using the HP manager, and out of the list of updates and I choose the BIOS update to start with (oops). The computer did it's download, the BIOS screen popped up and loaded fine and then it went to reboot to turn the computer on and... nothing. 

When you unplug the power cord and then plug it back in, the power light on the computer automatically comes on and STAYS on, no fans will run. If you press and hold the power button the light does not shut off. (You can see the fans move a little "jolt" as if TRYING to turn on but don't).

I've tried unplugging and letting the computer sit, I've taken out the CMOS battery and put it back in, nothing seems to be doing the trick and I'm at the end of my rope. 

I'm not sure if something went wrong with the BIOS update (I have found a customer advisory you need to update the video drivers before the BIOS but doesn't give advice on reversing it) or if I'm having a power problem that so happen to go at the same time. Computer was working fine up until the update. 

HP Pavilion 590-p0039 Information : https://support.hp.com/ca-en/document/c05941254 (My Dad's Computer I'm trying to fix so I know it still had all factory installation). 

If anyone has any ideas or places to refer me to it would be great! I can't even seem to find anyone with the same issue. 

[HannahBB92 · Accepted solution]

SOLVED 

I took to Google Again after a break! (I think a break is all you need to clear the mind)

I reviewed the CMOS to see if I was successfully clearing it by pulling the battery, but alas I was not! 

Reviewing the article on the motherboard (here: https://support.hp.com/ca-en/document/c05939208 ) I found a jumper pin that needed to be set. 

Moved the jumper pins, plugged it back in (where the fans actually ran!) waited 10seconds. Shut it off, unplugged, and moved back the jumper pins, plugged in again and was off to the races! It was properly reset and works! 

Thank you all who reviewed the issue!