I know that its not normal. I have no idea how to fix it is my problem and so far I can't find any help online

Well right now my wallet.dat is in the same folder as the wallet client, like in no sub folder at all. Could this be causing the problem?

So here's the deal, I'm fairly new to bitcoin although I have used it a few times over the last year and have never had a problem. I haven't touched it in a while and I had roughly 70 dollars of coins that I ordered last night that have been sent o my account. I went to open my bitcoin qt wallet and it starts updating the blocks and just froze updating. It still said trying to add blocks from like 77 days ago but it has no connections. It registers that it is my wallet but can't connect. It has also said not synced several times when I start it. I used to have a router all previous times and now I only have a modem, could that be the problem? Although I copied my wallet folder and put it on a different computer in my lan, and it didn't load my wallet it made a new one, AND it updated blocks and had no problem catching up. This really worries and frustrates me because I've tried deleting my wallet and reinstalling but I have no idea where to put the wallet.dat file, more do I know if that file is corrupt. Can somebody please trouble shoot me through this that has had this problem before? Again my wallet recognizes its me and my history but finds no connections. This is not a port or a firewall issue as my firewall is off, it says my ports are open, and my other computer connected fine.