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PC CPU fan spins for split second

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Hi, I have a PC I built about 4 yrs ago, Ryzen 7 3700x, 16GB ram, RX580 GPU.

A week ago I got to my PC and it was dead, replaced power supply as I found a blown component in the PSU, then the CPU fan just spins a split second and nothing, no LEDs, D-E-D DEAD!!! Replaced MB and RAM, still same issue.

Now I am left with either the CPU or the GPU, which would be the most likely suspect in your opinion?

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Re: CPU or GPU

In reply to PC CPU fan spins for split second

If the motherboard has a graphic processor built in (many have such), remove the graphic card and try again.
Anyway, the CPU is much more likely. A lot should happens before the boot displays something.

When a PSU fails like that.

In reply to PC CPU fan spins for split second

It can wipe out almost everything that was connected. I’ve seen the CPU survive but little else.

Since it’s the fans that spin a little you can strip the machine down to just PSU, motherboard and see if that will power up. If not, it’s the motherboard too.

Be sure to move the PSU and motherboard out of the case for this final test to avoid case short issues. And as many techs know, a case short can develop after years of use so you know to get a chunk of cardboard to put the motherboard and PSU on for that final test.

Reply To: PC CPU fan spins for split second

In reply to PC CPU fan spins for split second

Considering that your PC doesn’t boot up at all, I’d suggest starting by testing the CPU. If the CPU has failed, the PC won’t post or boot. If you have access to a compatible CPU, try swapping it and see if the PC boots up. If it does, then the issue is likely with your CPU.

However, if after swapping the CPU your PC still doesn’t boot up, then the GPU could be the issue. You can run some software and hardware troubleshooting to check if the GPU is the problem. For software, check if there were any recent updates or patches that may have introduced instability, or if too many applications are running in the background. For hardware, check if your PC has collected dust over time or if the fan from your GPU is making a louder noise than when you first purchased it. You can find detailed steps for these checks here: https://nvidia.custhelp.com/app/answers/detail/a_id/3565/~/graphics-card-basic-troubleshooting-for-video-corruption-/-crashing-/-system

Remember that the PSU failure could have potentially affected other components as well, so keep that in mind as you troubleshoot.​

[eben.v]

Reply To: PC CPU fan spins for split second

In reply to PC CPU fan spins for split second

Damn this was a hard lesson learned!!!

So I eventually got back to this, started replacing part by part, NOTHING!!! Took it all out, now have complete new PC, all new parts, built and install windows, great thus far. Install AMD graphics drivers, PC crashes, so bad the boot is corrupted, reinstalled Windows, install AMD drivers, PC crashes, reinstall Windows, BUT, this time back to the internet! Find reports all over that drivers cause this issue 😭

So install old drivers, great! All working. Build parts back into case, refuse to boot! WTF!!!??

Remove all parts, build on desk, can you believe, works like a charm!

Then it hits me, unplug all 4 SATA cable, BAM working, turns out one of my older HDD caused all this!

Now, take all my old PC parts, install Windows, WORKS!!!! 🤣 damn fool I am…

• This reply was modified 1 year, 2 months ago by eben.v.
• This reply was modified 1 year, 2 months ago by eben.v.
• This reply was modified 1 year, 2 months ago by eben.v.

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