Problems With Renewing IP Adress, May Relate to Run: Command?

I have two computers connected to one with a router, the "host" computer has limited or no connectivity, when I click on repair it says "cannot renew ip"

(the other computers still work fine)

I think that the problem is that someone must have used run: command and may have accidently deleted some prompts when using ping, because when I went to it, it had about a minute delay and had an error, is there a way to restore the prompts that were originally there?

it was working fine yesterday)

Problems With Renewing IP Adress, May Relate to Run: Command?pop up blocker

Several possibilities:

-Check your firewall settings

-Check your connection settings for the connection (right click on the connection%26gt;properties%26gt;General tab%26gt;TCP/IP%26gt;Properties%26gt;check the circle for "Obtain IP address automatically" and "Obtain DNS server address automatically"

-Clear your ARP cache--Start%26gt;run%26gt;arp -d