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Impossible to start my Imac 12,2 Quad-core Intel Core I5

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Joined
Nov 12, 2019
Messages
2
Motherboard
I Mac 12,2
CPU
Quad-core Intel Core I5
Graphics
AMD Radeon HD 6770M
Hello,

Since 3 days, I try to start my computer, but it never give me more than the boot apple (it started only once over 100 times...)

HID : Legacy Shim 2
busy timeout(0), (60s): 'IOFireWireLocalNode'
and then
IOConsoleUsers: gIOScreenLockState 3, hs 0, bs 0, now 0, sm 0x0
and then
FireWire (OHCI) Licent ID 5901 built-in: no valid selfIDs for more than 3 minutes after bus reset

and nothing...

Thank you for your advise !!!!
 

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Joined
Nov 12, 2019
Messages
2
Motherboard
I Mac 12,2
CPU
Quad-core Intel Core I5
Graphics
AMD Radeon HD 6770M
For Information, my Imac is running mac os 10.13.6 High Sierra
 
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