0x277b DC++ error

my DC settings seem ok, interet conection too, but the when i try to connect to any hub, it conects and most of the time disconects soon afterwards and shows this error.
Can anybody please help me ?
if some kinda specs(CPu, RAM) of my PC are needed to solve the problem can you add those too
P.s. i am not a total noob a this, but just got a new interent conection and PC and this error, before i have used DC a lot but nver had this kinda problem.