Saad,
What version and model we are running?
Also, did you try rebooting the box? If not please reboot and check the behaviour again.
If that doesn't work and If ACS SE gives you an option like Press F2 to specify the boot etc. Press F2 and get into bios using Password 'acs like acs1113'. And set the boot Preference as Hard drive. Save the settings and exit. I know that it is booting up from the harddrive but I want you to force it to boot from HD.
HTH
Regards,
JK
Plz rate helpful posts-
~Jatin