Please help me! Very weird connection issue.

[VanillaSpade]

Hey! i just got my computer less than a month ago, desktop
for the first 3 weeks, it worked flawlessly, and connected with my Wifi with no problems. All of a sudden, it started to take longer to connect for some reason.

Now, it randomly disconnects and stays disconnected for some reason. ALL other computers in the house are perfectly connected, so the router is definitely not the problem.
Also, i'm using a USB network adapter that is also new.

I currently have AVG anti virus and the standard Windows firewall so i'm not sure what could be stopping the connection. Windows 7 OS.
It says i'm connected, but there is a yellow exclamation saying No internet access, and sometimes saying limited connectivity. Also, it will Re-connect after 30mins to an hour by it's self. I am so confused. Could it be someone trying to use my wireless connection? doubtful, since the password is very complicated.

Please let me know if you have any suggestions on how to fix this problem. Very frustrated! Any advice is more than welcome. Thanks!

[jason2074]

Have you tried reinstalling the USB wifi adapter setup driver?

[VanillaSpade]

No i haven't. I will try doing that now.
In that time, any other suggestions? Thanks! will keep you updated.

[jason2074]

Well if you are not satisfied with the adapter and still under warranty, you could always return it for a replacement. Although you forgot to mention what brand/model is it together with your router.

[VanillaSpade]

I tried uninstalling the program and re-installing, nothing has changed. The network adapter is the ASUS USB-N13 802.11n, the Router is one given by Verizon.
I really don't think the problem lies with the router, since all other computers in the house work perfectly. I believe that somewhere in the firewall settings, or AVG settings, that there is something blocking the signal.
I really don't know.

[jason2074]

Do you get a good signal? How far is your desktop from the router? Have you tried power cycling the modem/router and with your computer also?

[VanillaSpade]

The signal is excellent when i'm connected, and is never inbetween. What do you mean cycling?
and also, do you think it could be a firewall problem?

[jason2074]

Power down the modem for a minute or two together with your PC. Let them re establish connection and see if that changes anything.

do you think it could be a firewall problem?

I don't think it would affect directly since its the adapter communicating to the router. Worth a shot though if you feel disabling these feature and check the difference.

[VanillaSpade]

Okay. The internet is working now, and it just turned on again by random. : /
I will try the modem/PC turn off as well.

[jason2074]

My modem and router is located downstairs. The desktop which is wired directly from router is located upstairs together with the laptop (connected by wireless). I always have to make sure a LAN connection is available by my room just in case the wifi connection is acting up. So I'll have 2 options for wired and wireless just in case since the desktop is stationary. I would also look into using a USB wireless adapter for the desktop but would keep the cable on standby.