help me with my internet connectivity problem?

A computer running windows xp 32 bit at my work for some reason all of a sudden cant connect to the internet neither through lan or WIFI.

it has a 100mpbs connection and says its connected but when i click the browser it says proxy at the bottom left hand corner .

ive tried everything from auto repair to pinging the dns server and looking at ipconfig etc

heres a ipconfig screen shot if it helps



and also this happened shortly after a network multi scanner printer was installed but i dont believe any network settings were changed , the internet through lan is through a sonic wall router and a belkin router.

any ideas?

i checked the boxes in the internet properties to get its information automatically, if thats not what you are talking about how do you recommend i set it up to get it to get it from DHCP automatically?

im pretty sure i set dhcp upto 100 , i tried changing the ip to like .50 too and nothing, but ill check the settings today .

weird little problem

i looked on google but couldnt find how to do that , mind telling me how?

baffled