Regarding Model name: SVT11225CGW, in fact, I have been using this for about 2 years.
N7260 issue always keeps me very frustrated.
It is difficult not to upgrade to Win 10 and I did that last year.
BUT the N7260 issue do exist whether before I upgraded to Win 10 or not.
At first, I could try to use Device Manager to disable and enable N7260 and sometimes it works
again, but later, the successful rate reduced.
Last year, I have no alternative but to buy a USB Wifi. USB Wireless Adaptor works ... but sometimes, the
connection would drop and I have to unplug and insert the USB Wireless Adaptor again. For such a problem,
I sometimes feel doubtful whether it relates to the fact that the only USB slot and Model do not have the
sufficient "power" support, because if i remove my wireless keyboard but just plug the USB Wireless Adaptor,
the connection always keeps good.
From the internet, it seems that N7260 problem is not uncommon to many users.
I have tried the updated driver from Intel regarding N7260 and it gives N7260 working sometimes but
sometimes not.
To conclude, the Model apart from its weight is not so good, and I am looking for a replacement unless good
solutions can be found.
Certainly, it seems to me that SONY's support to notebook computers are very limited.
For your information, if you try to search this model from the eSupport:-