New build won’t boot. No signs of life except DRAM light

Diagnosing a Non-Startup PC: Addressing the Constant DRAM Light Indicator

Building or upgrading a PC is an exciting endeavor, but it can sometimes come with unforeseen challenges. A common issue encountered during new builds or upgrades is a system that fails to power on, accompanied by specific diagnostic indicator lights on the motherboard. One such scenario involves the motherboard displaying a persistent DRAM (memory) light, with no signs of system activity, such as fans or RGB lighting. Let’s explore this problem, its potential causes, and the troubleshooting steps to resolve it.

Understanding the Issue

In this particular case, the user reports the following:

• The PC refuses to power on; pressing the power button results in no fans spinning or RGB activity.
• The only indication of power state is a constant yellow (or amber) blinking of the DRAM LED on the motherboard.
• The power supply unit (PSU), GPU, CPU, RAM, and motherboard have been replaced or upgraded.
• The PSU cables have not been moved or replaced since prior operation, making them less likely to be the issue.

Common causes for this symptom include:

• Memory module issues or incompatibility
• Faulty or improperly seated CPU
• Motherboard defects or BIOS issues
• Power delivery problems on the motherboard
• Short circuits or improper connections

Troubleshooting Steps

The following step-by-step approach helps isolate the cause:

1. Double-Check Power Connections

Even if cables are unchanged, verify that all motherboard power connectors (both CPU 8-pin and 4/8-pin) are securely and properly connected. Use the motherboard manual to confirm correct ports.

1. Reseat the CPU

2. Carefully remove the CPU and inspect for bent pins or debris.

3. Reinstall the CPU, ensuring it seats correctly and aligns properly.

4. Apply thermal paste and reattach the CPU cooler if removed.

5. Test RAM Modules Individually

6. Remove all RAM sticks.

7. Test each module individually in the primary RAM slot.
8. Use different slots to identify if a particular slot is faulty.

9. Confirm the RAM is compatible with the motherboard.

10. Clear CMOS

11. Reset the motherboard’s BIOS settings by clearing the CMOS.

12. This can be done by removing the CMOS battery for a few minutes or using the CMOS reset jumper.

13. Reinstall the battery and try powering on again.

14. Check for Short Circuits

– Ensure that the motherboard is properly mounted on standoffs.