No network connectivity?
– Check link light, patch cable, disabled NIC, wireless switch off (on laptops), IP configuration, and Windows Network Diagnostics.
– Ping localhost; then move outward and use ipconfig/all.
Poor wireless signal?
– Check distance, placement, antennas, and update hardware and software.
– IPconfig/release and /renew. Check DHCP server.
**Source by wikipedia**
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