F5F Stay Refreshed Hardware Desktop Light appears on motherboard but system fails to boot.

Light appears on motherboard but system fails to boot.

Light appears on motherboard but system fails to boot.

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carp3
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01-02-2026, 04:11 AM
#1
Hello! I recently put in a new AIO for my PC. After removing the old one and adding an extra fan, it won’t start. There’s a power indicator light on the motherboard showing it’s receiving power. My setup looks like this: Case – NZXT S340 (Razer Edition); Motherboard – Strix Z270E; PSU – Corsair CX750M AIO; I’m using Corsair iCUE H115i Elite. RAM – Kingston Fury DDR4 16GB x2. I removed my GPU to rule out that as a cause. I’ve tried everything: unplugging components except essentials, swapping the new AIO for the old one, double-checking all connections, inspecting the CPU socket for damage or misalignment, jump-starting with screwdrivers (which didn’t help), verifying RAM, replacing the CMOS battery, and confirming pin configurations in the manual. Only during installation I touched the CPU cooler and fans. After 8 hours, I’m getting really frustrated and have limited options left. Any advice or suggestions would be super helpful!
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C
carp3
01-02-2026, 04:11 AM #1

Hello! I recently put in a new AIO for my PC. After removing the old one and adding an extra fan, it won’t start. There’s a power indicator light on the motherboard showing it’s receiving power. My setup looks like this: Case – NZXT S340 (Razer Edition); Motherboard – Strix Z270E; PSU – Corsair CX750M AIO; I’m using Corsair iCUE H115i Elite. RAM – Kingston Fury DDR4 16GB x2. I removed my GPU to rule out that as a cause. I’ve tried everything: unplugging components except essentials, swapping the new AIO for the old one, double-checking all connections, inspecting the CPU socket for damage or misalignment, jump-starting with screwdrivers (which didn’t help), verifying RAM, replacing the CMOS battery, and confirming pin configurations in the manual. Only during installation I touched the CPU cooler and fans. After 8 hours, I’m getting really frustrated and have limited options left. Any advice or suggestions would be super helpful!

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