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Versione corrente di: Zachary Lunte ,

Testo:

Does a connected wired keyboard CAPS lock key light up when pressed after you boot the system with the display disconnected? If so, try the following. Disconnect the display so that the boot loop does not occur. Attach an external monitor and a wired keyboard. Power on the iMac while holding the option key on the wired keyboard. Do you see anything on the external monitor? If you see the startup manager screen showing bootable hard drives, then you can try to boot into your system and run some hardware diagnostic tests. If you don’t get anything meaningful on the external monitor it’s likely you either have an issue with your power supply, your video cardGPU, or your logic board.
Does a connected wired keyboard CAPS lock key light up when pressed after you boot the system with the display disconnected? If so, try the following. Disconnect the display so that the boot loop does not occur. Attach an external monitor and a wired keyboard. Power on the iMac while holding the option key on the wired keyboard. Do you see anything on the external monitor? If you see the startup manager screen showing bootable hard drives, then you can try to boot into your system and run some hardware diagnostic tests. If you don’t get anything meaningful on the external monitor it’s likely you either have an issue with your power supply, your video cardGPU, or your logic board.

Stato:

open

Post originale di: Zachary Lunte ,

Testo:

Does a connected wired keyboard CAPS lock key light up when pressed after you boot the system with the display disconnected? If so, try the following. Disconnect the display so that the boot loop does not occur. Attach an external monitor and a wired keyboard. Power on the iMac while holding the option key on the wired keyboard. Do you see anything on the external monitor? If you see the startup manager screen showing bootable hard drives, then you can try to boot into your system and run some hardware diagnostic tests. If you don’t get anything meaningful on the external monitor it’s likely you either have an issue with your power supply, your video card, or your logic board.

Stato:

open