PC Problem

Dear Sir or Madam:

I have a problem on my friend’s machine. The problem is that the PC can boot and after it checks the RAM it is stopped or stuck. What is the problem? Would you mind to tell me about this in detail about each step? Thank you very much for your assistance.

Sincerely yours,

Chan Choth

PS: Please send me your full email address in your answer in order to easily contacted with you. Thanks.