F5F Stay Refreshed Hardware Desktop No power detected, but no warning sounds or signals.

No power detected, but no warning sounds or signals.

No power detected, but no warning sounds or signals.

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awsomeplayzmc
Junior Member
18
08-09-2025, 09:16 PM
#1
You disassembled the motherboard to fix an old PC, but now it won’t boot. Lights are on and fans spin, yet the exhaust fan and GPU aren’t working. Need advice on troubleshooting.
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awsomeplayzmc
08-09-2025, 09:16 PM #1

You disassembled the motherboard to fix an old PC, but now it won’t boot. Lights are on and fans spin, yet the exhaust fan and GPU aren’t working. Need advice on troubleshooting.

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CuzImSlasher
Member
114
08-10-2025, 10:26 PM
#2
Reset the CMOS and attempt to start with a single RAM stick. If this fails, share your specifications.
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CuzImSlasher
08-10-2025, 10:26 PM #2

Reset the CMOS and attempt to start with a single RAM stick. If this fails, share your specifications.

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Tarasgames
Member
52
08-11-2025, 04:37 AM
#3
Switched RAM sticks, now a yellow LED lights up briefly with a brief CPU indicator. It seems my CPU might be damaged, as that’s the only component that came out of the broken machine. The current specs are a Ryzen 5900X, ASUS B550 Strix, 8GB of G-Skill RAM, a 750W ROG power supply, and a 3080 TI graphics card. With the damaged PC, I thought the RAM was the culprit due to error codes, but now I’m unsure.
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Tarasgames
08-11-2025, 04:37 AM #3

Switched RAM sticks, now a yellow LED lights up briefly with a brief CPU indicator. It seems my CPU might be damaged, as that’s the only component that came out of the broken machine. The current specs are a Ryzen 5900X, ASUS B550 Strix, 8GB of G-Skill RAM, a 750W ROG power supply, and a 3080 TI graphics card. With the damaged PC, I thought the RAM was the culprit due to error codes, but now I’m unsure.

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LuksFX
Member
108
08-30-2025, 11:11 AM
#4
It does sound like a decent possibility that the CPU is to blame if it's the only thing you carried over, but you can't be 100% sure if you don't have a spare one to test if the current system works without it. There's a chance that the bios on your new board pre-dates Ryzen 5000 support. I'm 99% sure a strix will have a bios flashback button, so you could try flashing a recent version.
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LuksFX
08-30-2025, 11:11 AM #4

It does sound like a decent possibility that the CPU is to blame if it's the only thing you carried over, but you can't be 100% sure if you don't have a spare one to test if the current system works without it. There's a chance that the bios on your new board pre-dates Ryzen 5000 support. I'm 99% sure a strix will have a bios flashback button, so you could try flashing a recent version.

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TrasherGamerZ
Junior Member
7
08-31-2025, 08:35 PM
#5
This seems unusual. I swapped the CPU from my second PC (5800x) back into its original slot, but now the RAM/CPU indicator isn’t working and I can’t post.
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TrasherGamerZ
08-31-2025, 08:35 PM #5

This seems unusual. I swapped the CPU from my second PC (5800x) back into its original slot, but now the RAM/CPU indicator isn’t working and I can’t post.