I have an acer laptop model aspire 4741G with corei3 2.4 ghz processor and 4 gb amount of RAM. I am using windows 7 ultimate 64 bit operating system. Recently I noticed that my laptop doest not boot automatically anymore. It always stops the operation after displaying the press f2 option to enter setup. After that, nothing happens anymore, the display remains black until I have to press any key. Its only then that it continue to boot up and display the OS. I thought it was a software issue so tried to format the hard disk and so I did. After formatting the harddisk, the same problem occurs even if I changed the boot priority to the optical drive still it does not continue booting unless I press any key on the keyboard. Another thing that I noticed was that the cursor on any application such as ms word or ms excel sometimes runs wild that I couldnt control. The cursor always runs on upward movement even if I am pointing my mouse on the desired direction. Please help me with this problem.