I rephrase my problem again.
My current computer has this specifications:
OS: Window XP S3
Right now my computer is unable to go into login screen or anything BUT once it reaches the window loading screen, a blue screen of death appear and the computer itself restarts. I couldn't get into safe mode or anything.
I heard the i have to use window xp cd to repair or reinstall which the owner doesn't give the cd as it was installed in my computer before i get it.
And now i want to get Window 7 Ultimate to be my os since its reinstalling so why not install the new os? BTW i don't care about the old files in my hdd man. However, once i boot up the cd it will go window loading files after that WINDOWS STARTING With win7 logo and after that BLACK SCREEN. Whats the problem?