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Gigabyte GA-H55M-USB3 Sleep & Wake Up Issues

Gigabyte GA-H55M-USB3 BIOS

I was dealing with this issue since I built my PC in 2010. I thought it was CPU and GPU overclocking related so I simply disabled the sleep and standby functions. However, these sleep and wake up issues persisted long after I reverted back to stock speeds. I left it for a couple of years and this past weekend, I decided to perform a quick Google search and found the solution.


Computer with Gigabyte GA-H55M-USB3 motherboard does not wake from sleep or the monitor remains dark after the computer wakes up.


Disable the integrated serial port in the BIOS.

Go to Integrated Peripherals -> Onboard Serial Port 1 -> Change value to [Disabled]

Hopefully you don’t need your serial port (most people don’t). I haven’t experienced any wake up issues after disabling the serial port, I will update this post if anything changes.

2 Responses

  1. speedyme
    | Reply

    You have finally solved an issue that I’ve been battling with for over 3 years. Thank you so much for publishing this post – the heartache leading up to this was unimaginable.

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