The DIMM slots A1 and B1 are not functioning properly.
The DIMM slots A1 and B1 are not functioning properly.
Hi My system fails to boot whether a RAM stick is placed in DIMM slots A1 or B1. It functions correctly when modules are inserted into A2 or B2 and both are in dual channel. I've tried several troubleshooting steps: 1. Sent and received a replacement processor under RMA. 2. Purchased a new motherboard. 3. Installed a different RAM module. 4. Adjusted CPU cooler screws as advised in the same discussion. I bought a Lenovo Legion PC in July, which came with 2x8GB RAM in DIMM slots 2 and 4. I ordered identical 2x8GB RAM directly from Lenovo to add to slots 1/3. After installing the new RAM, the PC wouldn't boot. It emitted a short beep for three minutes after powering on, but no monitor activity was detected. To confirm whether the new RAM caused the issue, I checked forums. My system details: - CPU: Ryzen 5 7600x - Motherboard: Old – Asus Gaming Tuf b650 - New motherboard: MSI x870 gaming plus WiFi - RAM: Old – GSkill Trident Z5 2x16GB RGB 6000MHz CL 36 - New RAM: EVM 4800MHz 8GB (bought for testing only) - GPU: Zotac 4060 - Cooler: Ant Esports ICE glow 360 - PSU: Cooler Master MWE v2 750 Bronze It appears the PC only works when DIMM slots A2 and B2 are used, after which A1 and B1 become accessible. I'm not certain about this yet. Please let me know if anyone else has encountered this issue. Edit: Added PSU model.
The document discusses compatibility issues with certain motherboards and RAM configurations. It highlights problems when inserting RAM in specific slots and notes that some systems function well with dual-channel setups. The text also mentions a need to use identical RAM modules for optimal performance and points out the importance of checking BIOS versions and PSU details.
I'm using the EVM RAM solely for testing. It was purchased as the most affordable option.
I have only two sticks installed, but I wanted to verify that my motherboard supports four when required.
I'm running the latest BIOS.
My setup includes a Cooler Master MWE v2 750 Bronze PSU.
I've just completed a fresh Windows 11 installation.