Immune System and viruses?

I have a question that I couldn't find a comprehansive answer for. My question is when a human cell is infected with a virus, how will the immune system recognize that cell so that it can clear/kill the virus or otherwise kill the cell itself to prevent the virus replication.

I am still not sure if the immune system can even recognize those infected cells. If it does, then how come the HIV infected T-Cells are not killed to prevent HIV from replicating?!

I am confused why our immune system can clear some viruses (like cold for example) and cannot clear some others!

Immune System and viruses?photoshop

the immune system attacks foreign bodies as threats. they try to destroy that foreign body. virus are self limiting. that means that they eventually die either bec they are at their limit or because the host is already dead. the HIV virus diasbles the abilitiy of the immune system that is why most people with hiv die from common infections such as a common cold. if you really want to understand whats going on in a cellular level, i suggest you buy a pathophysiology book. it is really helpful in understanding the disease process of some viruses. it could also provide explanations on other diseases of thehuman body.

Immune System and viruses?symatec