General Computer Questions

I am not able to play games like nfs shift and nfs hot pursuit on my laptop , my graphic keeps getting stuck? My laptop is compaq cq60-104tu,with 3gb ram and intel dual core processor.

what is the procedure of formatting

I have sound but no picture on movies received on the internet.

suppose u are a technician and you;ve been called out to a client who is having a computer problem. you try to boot it and the monitor is displaying an error message saying “operating system not found