Question Full Amount of Ram Not Recognised in UEFI/BIOS

[toblobtob]

All of a sudden my sisters computer does not recognize the full amount of RAM. I first discovered this when I opened task manager and it said 10GB instead of the full 16GB. I restarted and now it only says 4GB. I did not update anything or change any settings prior to this. The PC works fine and can run games but the RAM is limited.

I checked in the UEFI and it does recognise the right model number/name, but the wrong amount.

What I've tried:

• Sifting through various Google results and Reddit threads to no avail.
• Physical inspection and reseating of DIMMs. (see pictures 7,8)
• Reseating CPU / Loosening CPU cooler.
• Individually tested both dimms and dimm slots. Boots fine but halves the amount to 2GB.
• Flashed BIOS to newest (F17c) and previous (F16) version.
• Clearing CMOS and removed CMOS battery.
• Different speeds and voltages and disabling/enabling XMP profile 1 and 2.
• Resetting UEFI settings to defaults.
• Windows memory diagnostic, no faults or errors.
• Memtest86 test PASSED no errors, however it says the slots are empty and the size of the DIMMs are 0MB when checked individually within Memtest86 (see pictures 4, 5).
• Cleaning/dusting whole PC + specifically CPU and DIMM slots.
• Unchecked maximum memory in msconfig.
• Updated all drivers and OS.

Relevant specs:

• Motherboard: Gigabyte B550M S2H
• CPU: AMD Ryzen 5 3600
• RAM: Kingston HyperX FURY DDR4-3200 C16 DC 16GB (2x8) (HX432C16FB3AK2/16)
• OS: Windows 10 64bit

This has been increadibly frustrating and any help or advice is greatly appreciated.

 

[rgd1101]

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