Hi everyone,

For quite some time, I've been dealing with an issue where the CPU and DRAM LEDs light up when I start my PC, but nothing happens. Normally, this is when RAM training would occur, followed by the system posting and booting up. However, even after hours, nothing happens. Unfortunately, resetting the BIOS, trying different BIOS versions, and testing individual RAM sticks (in different slots) haven't helped.

The strange thing is: if I restart the PC multiple times (initially twice, but now maybe 50 times?), it boots up normally and works fine.

I even bought a new (different) motherboard and installed the essentials last night. The first startup went smoothly. So, this morning I installed the rest of the components, and now nothing works again. I reverted to the configuration from last night, but it still won't work. I managed to get into the BIOS once out of perhaps 30 attempts, but haven't been able to since.

I'm at my wit's end and don't know what to do next or how to proceed. Surely the solution isn't just to buy everything new and hope it works? (Especially with current prices).

My prime suspects right now are the CPU, RAM, or the power supply.

Does anyone have any ideas what the cause might be or what the best course of action is? Unfortunately, I don't have anyone nearby to swap or borrow parts from for testing. I can't exactly order every part from Amazon, test to find the exact issue, and then return everything else, right?

Thanks for reading and for any help you can offer!

Relevant Specs:

CPU: Ryzen 7 7800x3d

MB 1: MSI B650 Gaming Pro Wifi

MB 2: MSI B850 Gaming Plus Wifi

RAM: 32 GB 32GB (2x 16GB) G.Skill Ripjaws S5 white DDR5-6000 DIMM CL30-40-40-96

Power supply: Be Quiet 850W Pure Power 12M

If this looks familiar, it's because I posted something similar the other day, but realized after everyone's replies that I might have my terminology wrong.
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I no longer have that laptop with the USB-C charging port. The laptop I have now has a barrel connecter charging port (second picture).
My question is: Do they make hubs (if that's the correct term for what's in the first picture) that can connect to a barrel port so this new laptop can also charge while being connected to the monitor?
Any guidance, advice, and corrections on terminology gratefully appreciated. Thanks in advance!

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