Thanks weaselman, it is a Toshiba satellite A205, i have tried everything even by connecting the USB keyboard and have pressed Esc, F1, F2 and F8, F10, F12, but all i get is a annoying beeping sound and immediately after release,i get the same message
Press Alt+Ctrl+Del to restart
it does not go to boot options or does not go to bios at all.....
have not left anything for trying.. actually
Thanks for the support, i have solved this problem now.
by no way i could go to boot option and bios, so i disconnected hard disk from back which forced the laptop not to boot from hdd, in that way that sartup options appeared on laptopp F2 & F12 (which was for some reason was not showing before), by which i could select Bios or boot option, which solved my problem ...