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Hey all looking for some advice. Been running the following system for about 2 years without issue:

AMD 7700x

NZXT Kraken 360mm AIO

Asus ROG Strix x670e-a MoBo

Corsair Vengeance DDR5 6000 CL30 16GBx2

Samsung 980 Pro M.2 

Asus ROG Strix RTX 4090

Seasonic Prime 850 TX PSU

Recently while gaming whole system froze and wouldn't respond to any keyboard commands with an image of the game still on-screen. Long pressing the case power button wouldn't turn the system off so ended up needing to switch off the PSU. Following this the system will not boot even to go into BIOS. Fully turns on and RGB and fans fully run but just gives persistent DRAM fault error light on the board. Have tried Single stick RAM in all slots, swapping to DDR5 5400 RAM single stick in all slots, booting without the graphics card plugged in, Clearing CMOS and removing CMOS battery, running a BIOS Flashback, and most recently replacing the mother board with an Asus ROG Strix x670e-e. New board fresh from the box will not boot and gives the same error light. Tried all the same solutions listed above with the new board as well. Additionally, the board's error qcode display only shows 00 which the manual tells me is not used as an error code. At this point thinking the CPU might be bad and need replacing but wanted some feedback before I spent more money. IDK if the RAM is faulty given it wouldn't boot with either the 5400 and 6000 kits. Appreciate any help or insight.

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How long do you wait? It could be memory training, unless you waited like 5 minutes for the DRAM light to go away and for the system to boot, it shouldn't really take more than 5 minutes even on boards that are known to memory train way longer than average.

Note: Users receive notifications after Mentions & Quotes. 

Feel free: To ask any question, no matter what question it is, I will try to answer. I know a lot about PCs but not everything.

current PC:

Ryzen 5 5600 |16GB DDR4 3200Mhz | B450 | GTX 1080 ti [further details on my profile]

PCs I used before:

  1. Pentium G4500 | 4GB/8GB DDR4 2133Mhz | H110 | GTX 1050
  2. Ryzen 3 1200 3,5Ghz / OC:4Ghz | 8GB DDR4 2133Mhz / 16GB 3200Mhz | B450 | GTX 1050
  3. Ryzen 3 1200 3,5Ghz | 16GB 3200Mhz | B450 | GTX 1080 ti
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17 hours ago, SteveBinLaden said:

If you have already tested everything else, it sounds like the memory controller on your CPU has gone bad. Otherwise there is a small chance that you are extremely consistently putting in the memory wrong.

Lol hopefully I'm not that much of a scrub 

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17 hours ago, podkall said:

How long do you wait? It could be memory training, unless you waited like 5 minutes for the DRAM light to go away and for the system to boot, it shouldn't really take more than 5 minutes even on boards that are known to memory train way longer than average.

A good 5-10 mins on the first few boots. Less time with other later configs. Worked on it for around 5 hours yesterday and went through probably 30 boot cycles 

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2 hours ago, jbdrh said:

A good 5-10 mins on the first few boots. Less time with other later configs. Worked on it for around 5 hours yesterday and went through probably 30 boot cycles 

so it boots eventually?

Note: Users receive notifications after Mentions & Quotes. 

Feel free: To ask any question, no matter what question it is, I will try to answer. I know a lot about PCs but not everything.

current PC:

Ryzen 5 5600 |16GB DDR4 3200Mhz | B450 | GTX 1080 ti [further details on my profile]

PCs I used before:

  1. Pentium G4500 | 4GB/8GB DDR4 2133Mhz | H110 | GTX 1050
  2. Ryzen 3 1200 3,5Ghz / OC:4Ghz | 8GB DDR4 2133Mhz / 16GB 3200Mhz | B450 | GTX 1050
  3. Ryzen 3 1200 3,5Ghz | 16GB 3200Mhz | B450 | GTX 1080 ti
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