Hi there,When I first installed windows 7 RC on my Lenovo laptop it was fantastic, but as time has gone on, it now looses network connectivity after about 45 minutes, and won't shut down (you need to hold the power button), shut down is the only way to restore connectivity. Also updates don't work (from Microsoft Update).I'm not in front of the machine now, but can probably provide more details such as the error code of the update failure etc.Any ideas?Thanks,Neil

I suggest that you try the following steps. 1. Temporary disable or delete anti-virus program. 2. Roll back the network adapter driver. If the issue persists, you may do In-place Upgrade with the Windows 7 RC installation DVD to repair the system.Arthur Xie - MSFT