[bikerguynotts]

I have a Vaio laptop with Vista Home Premium which has been very well behaved for 18 months.
I have 3 users set up – Admin, User A, User B. I generally use User A. The Wi-Fi connection has been fine, until last week. Now, if I boot and log in to Admin, everything works as normal, but if I log in/change user to A or B the Wi-Fi connection switches itself off and won’t come back on. It also has then switched off in the Admin account and will only reappear if I boot and log in to Admin all over again. There aren't any system messages/warning messages or anything: it just switches off - any suggestions please??