Issue with red CPU indicator and memory light resolved successfully.
Issue with red CPU indicator and memory light resolved successfully.
So, last night I finally assembled my new PC for the first time. Everything powers up, fans are running and everything seems alive except for a red CPU indicator and an orange DRAM light. Only one 32GB RAM stick is installed in the second slot on the motherboard. I tried it in the first slot but it didn’t help. Adding my second 32GB stick didn’t resolve the issue. I verified the 12V 8-pin CPU power connectors and noticed there are two 8-pin ports—CPU-1 on the right and another labeled CPU-2. I realized I’m missing a second 8-pin for the CPU port from my 500W power supply, which seems to lack dual 8-pins. I connected just one into the CPU-1 port, making sure it wasn’t a PCIe connection. Still, the red CPU light persists and USB ports won’t work. The monitor shows up briefly but then displays no signal before going black again. It powers on normally otherwise. I removed the CPU power cable and restarted the PC, but the DRAM and CPU lights remain active. I’ve tried reinstalling the power supply, yet both lights stay on. I’m concerned it might be insufficient power or that both 8-pin connectors are needed. My parts list includes: MSI MAG B650M Mortar Wifi board, two 32GB Vengeance RAM sticks, a 2TB NVMe SSD, a Cooler Master Hyper 212 Black Edition cooler, a Smart 500W Thermaltake case, an AMD Ryzen 9 7950X CPU, and an AMD Radeon RX 6700XT. I’m ready to share photos if needed.
This power supply isn’t just inexpensive—it’s risky and could damage your setup. Cheap power supplies rarely perform well. They’re not suitable for running both CPU and GPU efficiently. The Hyper 212 coolers are also subpar; a better cooler is essential for a 7950X, especially if you’re going dual-tower or using a 360/420 air cooler instead of a custom loop. Moreover, 64GB RAM is excessive for gaming given the other components. It’s surprising you didn’t do proper research before building this system—it looks like a haphazard combination. I can’t believe you didn’t check PCPartPicker; it would have flagged the need for significantly more power than what you purchased. Hopefully, no one will recommend this setup again. What parts did you actually purchase? Did you get new ones, and do they still come with warranties? If possible, return the PSU and cooler immediately and invest in reliable alternatives.
I didn't verify everything before purchasing the PSU and cooler. I checked reviews, thinking they'd work fine. I know I shouldn't have saved too much on the power supply because my budget was limited. After buying the cooler, I realized it's not great. This is my first PC build, so I'm worried about any damage during installation. I'm already replacing the PSU to test if it helps. I used a PC part builder, but it didn't warn about incompatibility. I assumed everything was okay and bought everything in bulk. I still have extra cash, so I'll also get an AIO cooler.
You’re not even able to run this setup safely with a 500W unit; at least 750 is the bare minimum here, and 850W would be ideal unless you’re looking for significant savings. I want to warn many folks against relying solely on PSU calculators for every component—check actual build specs and the parts their designers selected. If reviewers don’t provide detailed wattage data, it’s best to look at real samples instead of just total system usage. I’ll definitely explore new PSUs and cooling solutions, but the issue that the system won’t even start in BIOS is already alarming—it shouldn’t be such a big strain. Try some basic CPU-light adjustments: 1. Unplug your cooler, remove the CPU from the socket, and repeat the process in reverse. Be careful not to touch the thermal paste or other surfaces excessively; you’ll be fine without changing it. Make sure the cooler is tightened using a criss-cross pattern, but stop once it’s snug. Don’t overdo it with pressure. 2. Re-seat your RAM. It’s surprisingly tricky to fix even with DDR5 support, and this simple trick still works. Ensure everything is aligned properly and clicked securely. 3. Reset the CMOS. This guide is from Intel, but it works for AMD too under ATX standards. The current 24-pin design is more than sufficient for most modern CPUs—just ensure you have at least one additional 8-pin connector if you’re using phase-change cooling or heavy overclocking, which is mostly marketing fluff.
This issue is critical. The PSU is likely to fail under heavy stress, possibly destroying all components in your setup. You’ll often encounter unexpected shutdowns during intense tasks like gaming. Operating parts beyond their rated limits isn’t covered by warranty, so unless you’re very fortunate you might lose everything instead of just spending more on the PSU.
For reference, every A-tier PSU is excellent, with models ranging from 750 to 850 watts. Prices typically fall between $120 and $140.
Here’s a top recommendation:
https://cultists.network/140/psu-tier-list/
And this particular unit stands out:
https://pcpartpicker.com/product/8z7p99/...f-850f14hg
It’s an 850-watt A-tier PSU, priced similarly or lower than many budget 750W options.
The PSU isn't sufficient for any use; it's a reliable F tier. I wouldn't rely on a Celeron with an integrated GPU to it.