Connection Probs

Hoping someone could point me in the right direction with my connection problem - in that it never connects.

Id point out that it used to work perfectly, then stopped.

Ive uninstalled/re-installed.
Looked for the pref folder in AppData but does not exist (I have turned on the view hidden folder icon, I may have deleted this in the past because I have tried to fix before and have just come back to it)
Deleted and then re-added firewall exception rule in my firewall/antivirus software (Bit Defender, can be a bit of a bee-atch, so also turned off firewall completely and run limewire then to no avail).
Disabled ultrapeer DHT and TLS capabilites in the advanced prefs
Specs are:

Windows 7
4mb RAM
Hardwired
Zyxel router on Home Network
300 Gig plus free HD space

Any thoughts anyone. Im not a techie but Im good at reading and applying simple steps!

Cheers