Black screen on Intel Processor after BIOS update

Hey there,
So, I recently picked up an Intel ® Pentium ® D 820 (that’s the 2M Cache, 2.8 dual Core version with the 800 MHz FSB) and tried popping it into my rig. The first time I hit power, the fan kicked on and then the whole thing just shut itself down immediately. The second attempt? It actually stayed running—fan and all—but I’m getting absolutely nothing on my monitor. Just a black screen. Interestingly enough, when I swap back to my old 1.8 dual Core, everything works perfectly fine.
I did a little digging online and stumbled upon the idea that I might need to flash a BIOS update.
Well, I gave that a shot, but it didn't exactly go according to plan—it was a total fail.
Current BIOS version:
http://prntscr.com/563127

Motherboard info:
http://prntscr.com/5631d6

Thanks in advance for any help.

What exactly do you mean by an unsuccessful BIOS update? Are you getting a specific error message or something else entirely?

Larry Ortiz5 said:What do you actually mean by an unsuccessful BIOS update? Are you getting a specific error message or something?

Well, when I try to update it, the system just won't recognize the processor—it’s like the BIOS won't even get past the initial stage. When I pop in that 2.8 dual Core, I can hear the CPU spinning up, but the monitor stays completely black.

Man, I can't even find where the drivers or BIOS updates are hosted on your motherboard manufacturer's site... Anyway—did you make sure you installed the very latest BIOS version? If you did, then there's a pretty good chance the processor is just toast. 🤷 To figure out if it's actually a hardware failure, maybe try testing it in someone else's rig or grab a cheap LGA 775 motherboard to see if the system actually boots up with that CPU. Unfortunately, that's about all the advice I can give you right now.

You’re going to need to reset your BIOS! My best advice would be to just pop the battery out, let it sit for about five minutes, and then put it back in—that should get everything back up and running smoothly for you.

I’m a little worried you might have fried the BIOS, which means you're looking at a replacement. Unless you're getting some kind of signal on your monitor, there isn't much we can do. If the screen stays black, I'm afraid the BIOS is likely toast.

It’s not compatible,
it won't work.

You're lucky you didn't fry the motherboard or the CPU.
You should always check if the CPU is compatible first.
There are plenty of other CPUs that will fit.

The usual way you handle this is by heading straight over to the motherboard manufacturer’s website, double-checking that the board actually supports the specific processor you're trying to use, and then just downloading and flashing the latest BIOS update. If it still doesn't boot after all that work, I guess you're either looking at a dead chip, or maybe it's just the wrong socket entirely...

It’s another thing entirely why you're even bothering with that piece of junk Pentium D when your dual core is clearly the better chip. Honestly, just stick with the dual core; the D is just a single-core disaster that runs hot and is probably going to make your PC perform worse, I guess.