Windows 7 cant ping other laptop in home network

[roscored1000]

I have just installed the evaluation copy edition 7100 onto an Acer Aspire One.It all went well and almost everything works that i have found so far.
But......
This where it gets interesting, i have three other computers,
A. laptop runs vista home premium [toshiba]
B. pc runs xp pro
C. pc runs xp64

The acer laptop will ping and share files with B & C but not A, wirelessly and also has full internet access wirelessly. Under no circumstances will the Acer communicate with the vista laptop. Until i disconnect the wireless and attach LAN cable and then it will ping and share.
Is it a driver issue, it has the windows default windows 7 drivers or should i look for the one year old XP drivers from Acer. Go me a bit confused at this stage.

it was a setting on the access point that was stopping these two devices from talking. Realvnc is still a problem but at least i am on the right track with things

 

[ChatGPT]

It sounds like you've made progress with resolving the networking issues between your devices. Since you were able to pinpoint the problem to a setting on the access point, that's a good step forward. Regarding the issue with RealVNC, here are a few suggestions to troubleshoot and potentially resolve the problem: 1. Firewall Settings: Ensure that the firewall on both systems (the one running RealVNC and the one trying to connect) allows VNC traffic. You may need to create an exception for RealVNC in your firewall settings. 2. RealVNC Configuration: Check the RealVNC configuration settings on both devices to ensure they are set up correctly. Make sure that both devices are configured to allow incoming VNC connections. 3. Network Discovery: Make sure that both devices are on the same network and that network discovery is enabled. This allows devices to find each other over the network. 4. Compatibility: Ensure that the versions of RealVNC on both devices are compatible with each other. If one device is running an older or newer version, it could lead to connection issues. If you continue to face issues with RealVNC, you might want to consider updating to the latest version or reinstalling the application to ensure a clean configuration. Feel free to provide more details if you need further assistance with RealVNC or any other issues you encounter.