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- Re: Replace HP 87C3 Moria3 - suggestions?

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12-17-2025 07:26 AM
Hi,
I need to replace the motherboard of my OMEN 25L because the RAM slot isn't working properly anymore. I can't boot, repair or reinstall Windows. HP diagnostics led to a failing memory test (DIMM 1). I swapped and replaced the RAM bars and even tried to boot with only one bar. The error consists.
So I think I need to replace the mainboard. I'm a total noob choosing hardware. Any suggetions what board I can replace the Moria3 with?
Thanks in advance!
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12-17-2025 08:25 AM
Welcome to our HP Community forum!
Your OMEN 25L Desktop GT11-0xxx as fitted with the Moria3 motherboard (SSID: 86D3) with p/n: L96321-001 / L96321-601 / L93880-01.
What I would personally consider doing, is to replace this motherboard with an identical Moria3 motherboard, which you can purchase via eBay-Germany, such as this purchase example: L96321-001 New For HP OMEN GT1 AMD CHIPSET B450 SOCKET AM4 DESKTOP Motherboard | eBay.de.
Kind Regards,
NonSequitur777
12-17-2025 08:25 AM
Welcome to our HP Community forum!
Your OMEN 25L Desktop GT11-0xxx as fitted with the Moria3 motherboard (SSID: 86D3) with p/n: L96321-001 / L96321-601 / L93880-01.
What I would personally consider doing, is to replace this motherboard with an identical Moria3 motherboard, which you can purchase via eBay-Germany, such as this purchase example: L96321-001 New For HP OMEN GT1 AMD CHIPSET B450 SOCKET AM4 DESKTOP Motherboard | eBay.de.
Kind Regards,
NonSequitur777
12-17-2025 08:37 AM - edited 12-17-2025 08:39 AM
I recommend you examine the memory socket with a magnifier and a good light. Look for corrosion, debris, etc.
Use an air duster. It could also be a bad capacitor or overheated discrete component.
Bad Capacitors
Overheat Symptoms
There is an Intel and an AMD version of the Moria3 motherboard according to google.
Unless I am mistaken, the motherboard (and case) are MicroATX and a standard sized matx motherboard will fit. The powersupply is also atx standard.
Out upgrade expert @NonSequitur777 might be able to help better than I.
Reddit is also a good source for information about Omen models.
[edit] NonSequitur777 you beat me to it!!!!
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12-17-2025 08:45 AM
The OP specified the Moria3 motherboard, and HP produces only a single version of its proprietary Moria3 motherboard, which is used in specific configurations of the HP Omen 30L and 25L series desktop PCs.
The Moria3 motherboard (SSID: 87C3) is a microATX board with the AMD AM4 socket and B450 chipset, designed specifically for use with certain AMD Ryzen 3000 series processors.
By replacing a defective motherboard with the same motherboard, the OP can conveniently transfer the processor. Btw, if the replacement motherboard requires a new Windows license, I can advise the OP for the best possible Windows license purchase deal.
Kind Regards,
NonSequitur777
12-19-2025 08:41 AM
Outstanding -please return to provide feedback how the motherboard swap worked out. For an inexpensive -though legit Windows 11 license, here is the site that I have used quite a bit: Buy Windows 11 Pro Retail Key- Cheapest Price - Electronic First -though you may need to use the German-specific site: Electronic First – Xbox, Playstation, Spiele, Softwareschlüssel.
Btw, I have to use my PayPal account (which is linked to either your credit card or bank account) to purchase a key, because using a regular credit card for whatever reason is not working so well.
Kind Regards,
NonSequitur777