what is going on

Have you made any changes lately such as changing from UEFI to Legacy or vice versa? Or switching from RAID to AHCI or vice versa? Run diagnostics, F12 at boot, to find any drive errors. Possibly the BCD is corrupt and this page at Addictive Tips may help. Also make sure the Windows Boot Manager is the first item on the boot menu in the BIOS. Of course the Dell diagnostics testing may show a bad HDD/SSD in which case you will have to replace the drive. Lastly did you make any changes or install updates prior to this problem?

i ran diagnostics everything is okay so it says and my boot settings only have ipv4 and ipv6 and i updated bios 

If you only have those boot settings then you have a problem. You should have Windows Boot Manager as well. First of all what is the exact model of your system? Then is the BIOS in Legacy or UEFI mode? Are you in RAID or AHCI mode? And if you updated the BIOS before this problem happened then the BIOS settings may very well have been changed. 

Make sure you are in AHCI (assuming you are in RAID now) and make sure that you have UEFI enabled. If that does not help then switch back to RAID. Not knowing the model number of your system I cannot guess whether Legacy or UEFI is the default. What it comes down to is that the BIOS update probably set the BIOS back to default values which would make it impossible to boot into Windows depending on the settings when Windows was installed.