Windows – Laptop stuck booting into only bios

asus-laptopbiosbootlaptopwindows 8


  • asus s400c
  • windows 8
  • 500gb hitachi hdd
  • 24gb ssd


  • if you make any changes to bios, when you save and exit it just boots right back in
  • started without any playing around, just booted into this one day.
  • can still see both hds in the sata configuration panel
  • no records in the boot options (I think I accidently deleted it, but don't know how to get it back)
  • wont boot from flash drive, even though it shows up in boot options


  • unplugging battery
  • unplugging hd
  • holding down power button with battery out
  • taking out cmos
  • putting hdd into my desktop, scanned for errors, seems fine
  • inserting another hd into
  • restoring defaults on bios options
  • bootable flash drive (easy bcd)
  • unplugging keyboard

I can not find the RAM or SSD, otherwise I would have tested them too.

Now I was playing around in the BIOS, and I removed the boot option that was there, Windows Boot Option. I have the option to "Add New Boot Option" but it asks for the path, I'm not sure what to put there.

Any help?

Best Answer

Here are some thoughts. I'm not familiar with your make of computer, and I'm also not familiar with what event led to these symptoms. Can you please give some more information about anything leading up to the laptop not booting up to an operating system? Has the laptop ever booted into an operating system? Are you attempting to install an operating system?


I've had similar symptoms when I switch my sata controller from IDE mode to ACHI mode. You might toggle these settings in the BIOS if available.

Obviously, at some step, the computer is unable to see the operating system on one of your drives.

Hopefully we can figure out what that is.

You might try putting the HDD into your desktop, as you said, and attempt to boot from that drive. For some computers, you must press F12 when you boot in order to select the boot device. Choose the HDD from your asus laptop.