friend I pressed
window key +R
then I wrote msconfig and pressed enter
system config.window appeared there I selected boot...theren check safe boot and apply and OK
now the problem is when I restarted my computer it used to boot in safe mood,,,, and when press Ctrl+Alt+del window appears it requires password that I don't know ( I have no Password ) and computr does not further proceed.............I tried F8 and different mode like safe,last good working setting etc etc but nothing work and safe mode appear
Now how can I boot my computer please help soon