New installation will not boot, freezes at DHCP - Ubuntu 18.04.3 LTS

[woolyguy]

Sorry for the beginner question. So I just did a fresh install of Ubuntu 18.04.3 LTS. When I try and start the OS, it never boots up. It hangs at loading DHCP. I don't know why. I know the hardware works, because my buddy already installed 18.04.3 LTS on the same comp and gave it to me. It was wiped clean, and now I am installing it fresh myself. The only difference is that my install was at my house on my network, BTW the comp is hardwired to my router.

I wonder if this is the problem:


The Ubuntu Tutorial shows this:






However, during my install, this is my actual option:




Do I just have to change the address? Is that the problem?

[Skaperen]

it seems you do have ethernet but your computer isn't getting any answers on it. maybe that is the wrong type of cable. do you have an ethernet hub or switch and a 2nd cable?

[woolyguy]

it seems you do have ethernet but your computer isn't getting any answers on it. maybe that is the wrong type of cable. do you have an ethernet hub or switch and a 2nd cable?

Thanks for the reply. I swapped cables just to check, and it's not that. I plugged directly into my router too, no extra access point or switch in between. The comp is a Lenovo ThinkCentre M72e, mobo is LEVONO MAHOBAY 0B98405 STD. This machine was used by a large company recently, and then they replaced all their machines so the old ones were given away to employees, so I know the machine works well. It also was working well when my friend gave it to me. I really doubt it is the hardware, but then again, I don't know what is wrong.

[woolyguy]

Anyone else have any idea how I can get my install right. I am brand new to Ubuntu, and I have not even gotten the installation finished.

[Bashing-om]

woolyguy; Hello; Welcome to the forum.

A thought - bad install medium?

Did you verify the download of the .iso ?
https://help.ubuntu.com/community/HowToMD5SUM

Did you verify the copy ?
https://help.ubuntu.com/community/In...IntegrityCheck

And as a check when booting the installer to "Try Ubuntu" mode;
Does networking work here ?
what shows:

ip link ls
ls /sys/class/net
ip route show

Let's see here if you can talk to the router.

gots to be a reason