Stuck at the first screen.

Well, i've a 32 bit Home Premium version on a Dell.
My hardware is functioning normal.
But then it says i needed to install a new update for Windows 7 upgrade, so i download it and installed it.
After that i needed to restart my computer, and now its stuck at the first screen where you see a Dell logo and a loader beneath it, well it is stuck at exactly the half of it.

What can i do to get back on my PC?

METHOD I from this link http://www.vistax64.com/tutorials/76256-system-restore-undo.html

Very nice, but i cant get there because its stuck.
So i cannot even enter the System from the boot screen.

Rubjo said:

Very nice, but i cant get there because its stuck.
So i cannot even enter the System from the boot screen.

Click to expand...

And so what?If you have Dell computer you should have Vista DVD,boot it,navigate to WinRE and restore system as those link (METHOD ONE) say