Where on the site can I find and Download the Bios for my Pavilion 21 All-in-one Touch Screen

[RobertWOLF0848]

I just installed a new CPU (Intel i5) and the screen seems to not show anything upon Boot up.

I found out that I need the bios for the new CPU to work, I tried to get said "Bios"  from HP themselves for they say that the PC would not start "Ever again" with the wrong bios installed.

So I've been looking for over an few hours for the Bios but the site seems to send me in circles or to things I can not use until after start-up and sign-in. PLEASE, I really need the Boot Files to continue my work.

I jumped up from a Pentium G3220T to i5-11400F

[Paul_Tikkanen]

Hi:

If this is your model PC, unfortunately no BIOS update in the world is going to allow the i5-11400F processor to work.

HP Pavilion 21-h013w TouchSmart All-in-One Desktop PC Product Specifications | HP® Customer Support

The best processor upgrade supported are one of those listed under the processor upgrade specs on the above link.

Low power 4th Gen core processors only.

Processor upgrade information

• TDP: up to 45 W
• Socket type: FCLGA1150
• Motherboard supports the following processors:

  Processor	TDP	Integrated Graphics
  Intel Celeron G1820T (Haswell) 2.4 GHz	35 W	Intel HD Graphics (GT1)
  Intel Pentium G3220T (Haswell) 2.6 GHz Dual Core	35 W	Intel HD Graphics (GT1)
  Intel Pentium G3240T (Haswell) 2.7 GHz Dual Core	35 W	Intel HD Graphics (GT1)
  Intel Core i3-4130T (Haswell) 2.9 GHz Dual Core	35 W	Intel HD Graphics 4400 (GT2)
  Intel Core i3-4150T (Haswell) 3.0 GHz Dual Core	35 W	Intel HD Graphics 4400 (GT2)
  Intel Core i3-4330T (Haswell) 3.0 GHz Dual Core	35 W	Intel HD Graphics 4600 (GT2)
  Intel Core i5-4570T (Haswell) 2.9 GHz Dual Core	35 W	Intel HD Graphics 4600 (GT2)
  Intel Core i5-4590T (Haswell) 3.0 GHz Quad Core	35 W	Intel HD Graphics 4600 (GT2)
  Intel Core i5-4670T (Haswell) 2.3 GHz Quad Core	45 W	Intel HD Graphics 4600 (GT2)
  Intel Core i5-4690T (Haswell) 2.5 GHz Quad Core	45 W	Intel HD Graphics 4600 (GT2)
  Intel Core i7-4765T (Haswell) 2.0 GHz Quad Core	35 W	Intel HD Graphics 4600 (GT2)

[RobertWOLF0848]

Yup... and I found the problem too, the new chip(CPU) was faulty,

I also noticed and fixed the CPU Pins that was damaged.

However after taking out the CSOM Battery to reset and get a

signal from the screen [as so many Tutorial told me to do] it

seems that the system is stuck in limbo, it Boots [On it's own]

but no signal seems to come through still. Now it's roving up

the fans with the old CPU in the slot, and it seems I fixed the

repeated start up and shut down error, but even with the best

Thermal Paste (By Grizzly) it will not boot correctly.

If you have any clues as to why this is now happening with the

old chip, I'm all ears. I'm keen on believing that the motherboard

is fried, seemingly burn marks are on the New CPU chip, so I

though it was a shine effect but nope it seemingly is a burn mark.

Though the CD Drive works just fine despite it all but other ports

not so much. The next thing to try is unplugging the [none glued]

parts and detach them then try and boot with the original stick of

RAM [4GB]..Thank you for the feedback.

[Paul_Tikkanen]

You're very welcome.

Yes, I agree with you that the motherboard was possibly damaged by a short circuit if you saw burn marks on the processor.

Unfortunately, I wouldn't know how or even if you could fix a problem like that.

I wrecked a PC like that once and I vowed never to do any more upgrades other than SSD's, memory and (graphics cards in a standard desktop PC).

I put too much arctic silver conductive thermal paste on the processor and was enjoying the PC's much better performance, when about 5 minutes later it abruptly shut down.

Seems the thermal paste as it got hot, flowed beyond the heat spreader, and down into the socket, wrecking both the processor and motherboard.

If you can find a used but tested and working motherboard, that may be an option.

Make sure that it is one that comes with the Windows product key in the BIOS, or you will have to also buy a new Windows license.