電腦發病

我個電腦最近出左d問題................唔知係中毒定係部機有問題...煩左我成個星期la...連剷三次機..但而家仲係有d問題..有時會彈上面果個畫面出黎...但我又唔識係乜...?有冇人可以幫下我...???唉!!!!!!!!help~~~~~~~~~~~~~~