The D8500 was new on the 2nd February 2017, only had it on for three days when Infinity started playing up. Had to swap back to the dreaded HH6 to deal with BT. Took most of the month to sort it out and get DLM reset. Put the Netgear back Tuesday this week, worked fine until Wednesday. Then these problems started. Googled for eight hours solid went through everything i could. Reset umit to factory settings and started again. Have raised a ticket with netgear, really difficult to deal with netgear direct but, ongoing. You wonderful people as allways are great thank you. I originally thought it was a microsoft problem with dropping connection coming out of S3 but not the case. Because they do not all present exactly the same symptoms. Three units are new builds. My unit is the one i am doing the most work on. Reinstalled windows. I am very frightened not to resrart the connection too many times, as it takes a miracle to get the DLM reset. But prior to this week the HH6 although slower was ok. Thank you again for your kind help. Regards