I have three windows 7 64 bit computers all on a home network on on the same home group. one pc can see all three but the other two cannot see it. I've disabled the firewall, checked services, rebooted the router, checked network discovery. Is there anything I'm missing?

Can you access the PC on the other two computers after entering \\computername in Start Search box? I suggest you upgrade the network driver on that PC. If it does not help, change NetBIOS over TCP/IP settings. 1. Click Start, and then click Control Panel. 2. Under Network and Internet, click View network status and tasks. 3. Click Change adapter settings. 4. Right-click Local Area Connection, and then click Properties. 5. In the This connection uses the following items list, double-click Internet Protocol Version 4 (TCP/IPv4), click Advanced, and then click the WINS tab. 6. Choose “Default…” under “NetBIOS Setting”.Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.