HP 1810-48G can't see on Network

We are using an HP 1810-48G switch . I would like to open up it's GUI interface but I can not

see it on my network when I run an IP Scanner or the HP Discovery Tool. I have close to 40

users on the switch and everything is working (accessing internet , network drives etc...)  The

1810 does not have a Console port and I hate to take a chance and reset switch to factory. Anyone

have any idea what is going on? When I orignally installed I set the static IP.. But it is no longer

at that address.

Thanks