Ok am computer freak but when it comes to hardware i suck, not sure what exactly the problem in my case...i had my PC on but then it started to make some noise and it seems out of the processor fan and then the PC shut down...so i tried several times to get it starting but it kept shutting down everytime the same way so i figured it could be the fan is out of order thus i have replaced the fan and made sure its plugged correctly...to make long story short after the replacment it startup till the window where it says windows didnt shut down correctly and select one of the following
safe mode
safe mode somthin
last working configurationg
normal start
and when i select any option it do nothing and just restart the pc till it reach the same thang over and over

ps: i made sure when replacing the fan that i dont touch any thing else not to cause any further damage, any idea what should i do now?