hi i have this problem with my main pc

i have a wifi network [netgear] and it is ok but i did some wrond settings on my main pc in the internet settings and now i cant conect is says "canot conect with the dns" i dont know what to do so plz help me .With my laptop i can conect fine in the wifi network but with the main pc i can't (it is a tower pc) so  if someone know something how to fix it o the best how to restore the original system settings for wireles conection plz tell me in the status is says "Local conection only"

[gr] geia sas exw ena provlima me to asirmato diktio m exw kanei kapies la9os ri8miseis kai den benei apo ton kedriko ipologisth internet.

leei pws den ginetai i epikinwnia me to dns me to laptop borw na bw mia xara sto diktio opote to diktio den exei provlima.Opios borei na m pei pws na  kanw ena restore ta wireless setings  8a m voh8ouse poli kai katw sto eikonidio grafei "Mono topika" opios borei na me help 8a to ektimousa ty

Probably messed up the connection settings..

Go to Control Panel > Network and Sharing Center > Change adapter settings > Local Area Connection (Right Click) > Properties > Internet Protocol Version 4 (TCP/IPv4) > Properties > Obtain an IP address automatically + Obtain DNS server address automatically > OK > Close.

no i already have these setings and it sas only local :/ btw i found some scrypts and if i  click on them the only local status becames local and internet but i need to conect automatically without the scrypts ty