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PC Won't Power in After Moving it to new chassis

Go to solution Solved by VietKing,
14 hours ago, VietKing said:

Got a new case for my pc. Moved it into it and now when I press the power switch nothing happens. The debug light, lights up for a millisecond under Dram, GPU, and Boot drive. But nothing turns on and it only does the debug light once before I have to unplug it for it to do it again. Everything worked fine when I had it in the old case this morning

Okay found the problem. One of the PSU cables was from a different PSU and didn't work with this one.  Removed the cable and it worked

 

Got a new case for my pc. Moved it into it and now when I press the power switch nothing happens. The debug light, lights up for a millisecond under Dram, GPU, and Boot drive. But nothing turns on and it only does the debug light once before I have to unplug it for it to do it again. Everything worked fine when I had it in the old case this morning

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check all your power connections, and your front panel power header connection

Quote me for a reply, React if I was helpful, informative, or funny

 

AMD blackout rig

 

cpu: ryzen 5 3600 @4.4ghz @1.35v

gpu: rx5700xt 2200mhz

ram: vengeance lpx c15 3200mhz

mobo: gigabyte b550 pro 

psu: cooler master mwe 650w

case: masterbox mbx520

fans:Noctua industrial 3000rpm x6

 

 

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11 minutes ago, Letgomyleghoe said:

check all your power connections, and your front panel power header connection

Just checked them again and everything is tight and snug. 

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Check that a standoff isn't in the wrong hole on the motherboard tray and causing a short.

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5 hours ago, johnny5c said:

Check that a standoff isn't in the wrong hole on the motherboard tray and causing a short.

Checked all the standoffs. The P400a comes with a standard atx standoff so nothing ahlookuld be wrong

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Take the stuff out and test it on the bench maybe?

... but I'm no expert

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14 hours ago, VietKing said:

Got a new case for my pc. Moved it into it and now when I press the power switch nothing happens. The debug light, lights up for a millisecond under Dram, GPU, and Boot drive. But nothing turns on and it only does the debug light once before I have to unplug it for it to do it again. Everything worked fine when I had it in the old case this morning

Okay found the problem. One of the PSU cables was from a different PSU and didn't work with this one.  Removed the cable and it worked

 

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