'''++@aboo1972++'''
no, there is no reset button. It appears as if you have corrupted your operating system. At this point you could probably reinstall your Windows operating system. You will of course need a copy of the OS for that. Since your computer still starts etc., you could get a LIVE Linux CD (I use Puppy Linux because it’s easy to use)and start your computer from that. You can then access your HDD and remove any files you need by copying those to a USB drive. After that reinstall your OS. You will probably have to set your BIOS for your computer to tart from a CD. To access your BIOS you press and hold "F2" on the computer keyboard when the Dell logo appears on the screen. The computer will enter the system setup program to display information stored in BIOS.