WN150 AP that won't work after changing ISP

Hi,

If anyone can help I'd be really grateful.   I had the AP installed by an engineer about a year ago as part of a major house redevelopment.  As it is over a year old Netgear will now give no support, which has left me unable to figure out what to do to make the AP usable agian.  

I live in the UK and recently changed ISP provider from Sky to BT.   Upon changing I noticed that the IP address that BT uses has one digit different from Sky  ie  192.168.1.100 instead of 192.168.0.100 and all ip's on the LAN now have the 1 addres instead of 0 within the address.   I have managed to change everything over apart from the WN150 AP.   I also have two TP-LINK AP's which I swapped over without any issues.

I have tried a number of times to reset to factory settings, but whatever I do I am unable to log into the router on a web page.   I have tried all the default logons without success.   I even took the router to my fathers house where I could login to it as his network was using the .....0.100 instead of the new ...1.100 that my new ISP uses.   When I logged into the router I changed its IP address to 192.168.1.205 thinking when I got home I would then be able to log into it, unfortunately this didn't work either.   

If I run an IP scan on my network I can see the router with the ip address 192.168.1.205 but I am unable to log into it at all.

I have searched throughout the instructions and not found anything that I think will help resolve this.

I use a MAC but also use a PC and have done the CMD followed by ipconfig and it seems to show no information for the AP.

As I mentioned earlier I have two other AP's by TP Link which work fine but I just don't know what to do next with this one.

Any help or pointers would be really well received as at the moment its useless but I know from using it elsewhere its functional.   I can also see it on my list of wireless networks with the SSID NETGEAR57.

Thanks in advance.

Paul