I am using a Dell Inspiron 1440 laptop, with a Windows 7 Ultimate 64 bit OS. I recently reformatted my C:/ drive, and all seemed to be working just fine until I installed an icon package, which required me to reboot the computer. Since then, my laptop has not been able to get past the Advanced boot options screen (i.e. the Dell logo showing along with the "F2 Setup F12 Boot Options menu", and later it goes into the white blinking screen (like when you're typing), and the screen goes black after awhile, restarting again to the advanced boot options menu. Any help would be greatly appreciated!