After working OK for several months my Chromebook wifi connection now drops after about five minutes of turning the computer on. I can then see no sign of any wifi connections to reconnect to and have to reboot the machine. The wifi connection is fine on other machines in the house and I've had the same problem using a router in another property. I've done a hard reset but that didn't solve the problem. I can't check if the software needs an update as I can't get onto the intenet, although I've just ordered a ethernet/usb adaptor to do this. The machine is only three or four months old bought from Curries.
Any suggestions?