I am having a Sony VAIO e series laptop with windows 8 installed on it. Today when i switched on the laptop a blank screen was showing and is stuck. But after pressing the space bar key the SONY boot-screen was showed and was again stuck. Again on pressing the space key windows was loaded and was working fine. The same happens on every start up. Can anyone help me to sort out this issue.

Is there any instructions on the screen? How did you know to press the space bar?

No there was no messages, only a blank screen. When nothing was displayed i simply pressed the key and it booted up. On pressing any key on the screen windows get booted up in the same way as mentioned above.

That's odd. I feel like something like that might be coming from the BIOS (since it's happening prior to Windows beginning to load up), but I have not heard of a situation like this before.

The only things I can think to try first are unloading any discs from the computer and unplugging other devices like cameras, flash drives, or anything other than keyboard mouse, and then trying again. Other than that, I am not sure what else.