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Question: How can I clear the CMOS on my Intel 500 series motherboard?(2/1/2021) Answer: Please follow the steps below.
Step 1: Disconnect the PSU from the motherboard.
Step 2: Find the CLRMOS header by referring to the motherboard user manual.
Below picture shows what the header should look like.
Step 3: Use a conductive metal object to short the CLRMOS header for at least 30 seconds. You can use for example a paperclip, key, coin or a screwdriver.
Step 4: Remove the metal object from the CLRMOS header and then wait at least 5 more minutes.
Step 5: After 5 minutes please reconnect the PSU and power on the system.