I’ve been fighting a weird stability issue for the last few days and could really use some help diagnosing it.
Full Specs:
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Motherboard: MSI A320M-A PRO
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Old CPU: Ryzen 3 1200
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New CPU: Ryzen 5 5600
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GPU: NVIDIA GTX 1060
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RAM: 2× DDR4 (XMP off, running stock)
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PSU (old): Deepcool DE500 v2 (500 W)
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PSU (new): Chieftec TPS-700S (700 W)
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Two simple 512GB Patriot SSDs
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OS: Windows 11 x64
Issue:
After upgrading from a Ryzen 3 1200 to a Ryzen 5 5600, my PC randomly restarts without any BSODs – just a quick black screen for 1–2 seconds, then returns to the Windows login screen.
It happens both while idle and during light gaming.
What I’ve Already Tried:
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Updated BIOS to latest version (7C51v18)
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Replaced PSU (no change)
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Disabled A-XMP
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Installed latest AMD chipset driver (7.04.09.545, April 2025)
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Clean-installed NVIDIA drivers with DDU
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Disabled Fast Startup
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Ran
sfc /scannowanddism /restorehealth -
Loaded Optimized Defaults in BIOS multiple times
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Tested with one RAM stick (still restarts)
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Set Windows power plan (Balanced)
No new minidumps are generated.
Additional Info:
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CPU is detected fine in BIOS and Windows.
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Temps < 70 °C under load.
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Old Ryzen 3 1200 no longer boots after BIOS update (fans spin, no display).
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Windows fully updated.
What I’m Asking:
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Anyone running a Ryzen 5 5600 on an MSI A320M-A PRO – did you experience similar random restarts?
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Any reliable way to confirm whether it’s CPU, VRM, or RAM-related?
Thanks for reading – any help or shared experience with this combo would be appreciated.
TL;DR:
After upgrading from a Ryzen 3 1200 to a Ryzen 5 5600 on an MSI A320M-A PRO, the PC randomly soft-restarts (no BSODs). Tried new PSU, BIOS update, chipset/GPU drivers, single RAM stick, and every fix I could find – still restarts.
