I am trying to help my neighbour fix his laptop and can't seem to figure out what's going on.
It's a sony laptop (Model PCG-21313L) running a starter version of Windows 7 that came with the laptop.
The problem is that while browsing webpages, the wireless card will disconnect from the network and is unable to detect the network (I have tried this on my wireless network and his). The only way we have been able to get around this so far is by running the windows troubleshooter every time that it happens. Once we run that diagnostic the windows troubleshooter resets the card and the laptop connects to the network and internet again. My neighbour has had programs running overnight downloading from the internet and that doesn't seem to cause any issues.
I have been browsing forums trying to find the answer and haven't found it yet. I've changed the setting so that the laptop cannot turn off the card to save power. Ipv4 and Ipv6 are both set to auto configuration. I have seen some mention of going into the advanced properties for the wireless card to change the "detection mode" to auto (I believe this is to do with 802.11b/g/n and which type of signal) but none of the descriptions in the forums matched what I saw on the laptop (or on my own pc) so I was not sure which setting they were referring to. I reviewed all the advanced settings on the laptop anyways and as far as I can tell they are correct and the laptop should not have issues.
If anybody has any insight into what is causing this I would definitely appreciate your help.