Thank you for the details provided, according to your description, it seems that your Switch (ICX7150 Switch) may be stuck in boot mode, so in order to fix it, you need to get access via console, using two connections one is for console access using the USB to type C cable (USB to type C cable where the USB will be connected on your computer and the type C on your ICX7150 Switch) now the second connection will be an Ethernet cable from your computer to the out-of-band port on your ICX 7150 Switch) don't worry the guide explains the port locations and there are pictures about it.
Note: if you have the next Symptoms, Please follow up the software recovery guide, if not, please describe:
*The Switch will not provide power to any PoE devices (Doorbell, cameras, even the Access Points).
*Will not have connectivity to the devices connected to the Switch.
*The ISP router will work fine.
*Console access will be the only access available.
*System light will be yellow/orange/Amber.
How to perform a Software recovery on an ICX7150 switch