I have a VGN-Z21MN/B which is about 20 months old. The WiFi adapter fails intermittently and goes from working perfectly, to no available networks, to no adapter present at all. I have tried upgrading drivers, Sony Easy Network utility and have restored the laptop to factory image (Vista Business).
I also followed the FAQ from the Sony Support team but had no success fixing it.
I have also tried different power management settings, disabling power management on the adapter altogether, etc.
I have resigned myself to replacing the card which I have already received - an Intel WiFi Link 533 series.
The problem is that I stripped the laptop down as much as I dare, but I still cannot access the adapter to replace it. There is a plastic 'gasket' (for want of a better term) running around the inside of the chassis which prevents access to the components beneath it. I have remove all of the screws on the bottom of the outer casing, and those beneath the keyboard once removed, but no way to get beneath the 'gasket'.
Can someone please help with instuctions?
P.S. My level of knowledge is fairly extensive. MCSE, A+ so I think I've covered all the Windows bases.