"unsupported cpu installed" running on stock cpu

[natan2]

Hi everyone, I recently got  a free HP Pavillion p7-1287c and it came with no storage. I try and turn it on and it boots to hp recovery wizard/program and prints the specs and after that it tells me an error that there is an unsupported cpu but its the stock cpu. I have no idea what to do. Thank you.

[banhien]

@natan2 

Its specs:

         https://support.hp.com/au-en/document/c03134527

It has Intel Core 2400, and supports

• Socket type: LGA 1155
• Motherboard supports the following processor upgrades:

  Processor	TDP
  Core i7-2600 (Sandy Bridge) quad core	95W
  Core i7-2600s (Sandy Bridge) quad core	65W
  Core i5-2500 (Sandy Bridge) quad core	95W
  Core i5-2500s (Sandy Bridge) quad core	65W
  Core i5-2500t (Sandy Bridge) quad core	45W
  Core i5-2400 (Sandy Bridge) quad core	95W
  Core i5-2400s (Sandy Bridge) quad core	65W
  Core i5-2390t (Sandy Bridge) quad core	35W
  Core i5-2300 (Sandy Bridge) quad core	95W
  Core i3-2120 (Sandy Bridge) dual core	65W
  Core i3-2100 (Sandy Bridge) dual core	65W
  Core i3-2100t (Sandy Bridge) dual core	35W
  Core G860 dual core	65W
  Core G850 dual core	65W
  Core G630 dual core	65W
  Core G540 dual core	65W
  Core G530 dual core	65W

Do you know what is it now ?

Regards.

[natan2]

I just took out the CPU and it says Intel Core i5 2400. Which matches the description on the side of the case.

[banhien · Accepted solution]

@natan2 

Please update BIOS, hope this helps

         https://support.hp.com/us-en/drivers/selfservice/hp-pavilion-p7-desktop-pc-series/5187022/model/5192...

Unfortunately no new BIOS for the last 9 years. Please download and re-install.

Regards.