Final answer:
The issue could be that the DHCP server can't be reached, the default gateway needs to be manually configured, or the DNS server IP address needs to be manually configured.
Step-by-step explanation:
The issue could be that the DHCP server can't be reached. DHCP stands for Dynamic Host Configuration Protocol, which is responsible for assigning IP addresses to devices on a network. If the computer is unable to reach the DHCP server, it won't receive an IP address and therefore won't be able to communicate with other computers on the network.
The default gateway is the IP address of the router that connects the local network to the internet. If the default gateway needs to be manually configured and it is left blank, the computer won't know where to send data packets meant for computers outside the local network, resulting in a lack of communication with other computers.
The DNS server is responsible for resolving domain names to IP addresses. If the DNS server IP address needs to be manually configured and it is left blank, the computer won't be able to resolve domain names to IP addresses, making it unable to communicate with other computers on the network.