Thank you in advance. I have a dell pc with a Samsung hd642jj hard drive. This pc has been a great computer. Over the last several months it's slowly gotten worse, but it will freeze up. Then you have to manually shut it down. Now everytime you reboot it comes up with hard drive error, you hit f2 and then esc and don't save changes, sometimes it will reboot and other times it won't. I've ran malwarebytes, avg, norton, etc. etc. and nothing fines any kind of virus of any sort. Is there anything else i can try or change? Of course i can't find my windows vista disc, or my nvidia disc to reload my other drivers if this completely takes a dump. But i do have all other important personal info and pics/vids/and music backed up. Everything i run though says it's a bad hard drive. Any help would be appreciated. I'm on my wifes laptop at this moment as i can't even get my stuff to boot up, once it does boot up and everything starts to load up, it freezes, gets wierd red lines and nothing works. Have to shut it off manually by holding the power button.