The orginal posted have tried all the way keeping 1 Access VLAN, technically should work as expected, since Switch act as Layer and PC should get IP from cable Modem, as user confirmed that when he connect the cable to cable modem, he able to get IP address and internet working, (not confirmed what IP address he got it).
Some provider looks for truk config, so suggestion made to try with Trunk option since Access vlan not solved the issue here.
requested posted post and clarify the vlan 1 IP address, never had any reply interms of vlan 1 IP address clarification.
So we expecte orginal user to clarify and post lastest modifified config, and out come of hist testings.
make sense ?