Dual boot kali with windows 8

I dual booted Windows 8 and Kali Linux(1.0.7) with Kali installed in legacy mode(because my laptop doesn't allow me to boot from any external device in UEFI mode,it says system does not have DVD/CD or USB boot option). Now when I reach the GRUB menu it shows the Windows 8 loader but fails to boot from it. Now if I have to boot Windows I have to switch to UEFI mode or press F12 to get into boot setup and boot from the Windows boot manager. If I have to use Kali GRUB boots it automatically. How do I fix the Windows boot issue? Windows is on dev/sda5 whereas Kali is in dev/sda10.