Could not connect to netgear23

so i fixed my laptop a few days ago and it wont let me on the internet only around 12:15 to 1:55 is the only time i can get it to the internet and all yesterday i could not get my ps3 to join eather im on my land lord internet and my small lap top i can get on all the big one say is could not connect to netgear23 i need help its really up seting me do i need more wifi on a biger laptop then a little one or is some one hacking my laptop at thouse times and on the ps3 it say key might not be right but i use it on my little lap top and it works pls help me