Hi, My computer randomly freezes, makes a loud noise, the mouse won't move, will see squiggly lines appearing on my monitor screen and the computer shuts down. I have to turn off the power and turn it back on sometimes several times or more. Sometimes it boots up right away and other times it just comes on and the screen remains black and nothing happens. I would like to know if ANYONE can help me fix this problem??? Is my computer hard drive being destroyed and I have to junk it and buy a new computer? I hope it can be fixed. Thanks.