Pc won’t turn on

OK so you swapped something out.

Have you connected the IO pins from the case to the panel connector correctly?

Check power lead is seated, if possible use another one.
Check PSU switch is on.
Check fuse in the plug.
Check your wall socket is on.
 
OK so you swapped something out.

Have you connected the IO pins from the case to the panel connector correctly?

Check power lead is seated, if possible use another one.
Check PSU switch is on.
Check fuse in the plug.
Check your wall socket is on.
Yep have tried all of that
 
Disconnect everything except for cpu (but obviously the power lead and PSU on).
i.e. RAM is removed, GPU removed, no disks.

Does it start up or hear any beeps/LED codes?
 
I would remove the mobo and reseat it. Could be a short and you need to find it, temporary place it on a cardboard box outside the case to test.
 
Then sounds like the mobo isnt getting power. Are you definitely sure you have powered the mobo correctly from the PSU ? Normally there are 2 connectors. 24 pin ATX and another 8 pin ATX_12V.
 
Then sounds like the mobo isnt getting power. Are you definitely sure you have powered the mobo correctly from the PSU ? Normally there are 2 connectors. 24 pin ATX and another 8 pin ATX_12V.
They are both plugged in I think it might be an issue with the front panel connectors not working
 
Try the components outside the case, on the mobo box or whatever, reduce the number of variables, work from the bottom up (barebones).
 
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