Share your experience!
I am connected through WiFi. It has become frequent that I lose access to the internet while the wifi connection remains. If I disconnect from the router and connect back again I get a proper connection until the problem shows up again in a few minutes.
Are there any suggestions before I visit a technician?
Update to latest driver, uninstall and search web for driver, move wifi box closer, try a system reinstall using the recovery partition.
If you search this community there are many users who have reported such issues and it may be worth consulting the steps outlined here http://www.sony.co.uk/support/en/product/SVF1521N1EW/tips-and-solutions and here http://community.sony.co.uk/t5/PCs-Accessories/SVF1421C5E-Wifi-connection-Limited/m-p/1258778#U12587...
i understand the model number may not exactly match your device but its likely the resolutions will be similar.