svchost.exe cpu usaage



Yes sometimes when i want to restart or shut down the computer its crashes and appear a blue screen
 


yes im using windows 7 32 bit i dont know what hardware im using beacuse im not that good at computers
 


My system type is 32 bit like this http://support.lexmark.com/library/LEXMARK/ISD/SO5092/win7_system_details.jpg