Windows 7 Can connect to Wireless Router But Not

It seems like you've put in quite a bit of troubleshooting effort already. Let's explore some possible solutions for the connectivity issue with the 4th computer using the D-Link DWA-525 wireless transceiver. Here are a few steps you can take to address this problem: 1. Check Signal Strength: - Make sure the signal strength is strong enough where the 4th computer is located. Poor signal strength can cause intermittent or no connection to the internet. 2. Driver Update: - Ensure that the drivers for the D-Link DWA-525 wireless transceiver are up to date. Outdated drivers can sometimes cause connectivity issues. 3. Security Settings: - Check if the security settings on the D-Link router may be blocking the 4th computer from accessing the internet. Ensure that the security settings (like MAC address filtering) are configured correctly. 4. Firewall and Antivirus Settings: - Temporarily disable the firewall and antivirus software on the 4th computer to check if they are causing the connectivity issue. 5. Network Configuration: - Reset the network settings on the 4th computer to default and restart the computer. You can also try running the Windows Network Troubleshooter to diagnose and resolve network issues automatically. 6. DHCP Configuration: - Check if the DHCP settings on the router are correctly assigning IP addresses. You can try setting the 4th computer's network configuration to obtain an IP address automatically (via DHCP). 7. Hardware Issue: - It's also possible that the D-Link DWA-525 wireless transceiver is faulty. You can try using it on another computer to see if it behaves the same way. If after trying these steps the issue persists, it's more likely that there may be a hardware fault either with the D-Link DWA-525 or with the 4th computer's wireless capabilities. Let's troubleshoot further if needed or try any specific steps you'd like to prioritize.