Maybe it could be an issue with your CPU over heating but if you are getting a new CPU I recommend the AMD - FX-8350 8 core black edition. My friend has it and he says it is good from rendering and such!
Whats the issue please be specific and detailed! Assuming you have not set your secuirty level yet try going to settings >> Identities >> "Your ID you use for ALUK" >> Click improve >> Change the setting to 28 >> Wait for load >> Try connecting to...