It's more like weird issue, it first happen like a month ago, the user couldn't get IP address, was the only user on the switch, we change the patch cords, change the vlan to make short it was not a shortage of ip's on that segment (via DHCP), and then it work, but today happen again, even connecting directly to the switch with my laptop, at the end, I connect the user in a different port on the same switch (also tried without Auto option, no success) what do you suggest me to check?
Thanks
p.s. so far is the only user/port with this issue