text: my pc keeps on restarting while im doing my work but i don't know why! what maybe the causes? pls help me!   there may be many reasons. first may be a virus, just scan ur system for viruses. another most common problem may be ur ram is too much stuffed, u can remove many unwanted softwares that may be residing in it. go to run - > type msconfig in it & press enter, go to start up option & remove unwanted items. these two steps may help.