Hello guys,
i think i just fixed it so i'll leave what i've done for future generations.
First, the problem started when i installed Ubuntu on dual boot with Windows 8.1 , then i've decided to delete Ubuntu by removing the partition and restored to secure boot, this has clearly screwed up my boot manager and created the exact same problem as with the original poster, Symptoms:
- Locked C:, so cannot refresh,reset,restore or any other
- Boot entries missing, whether in msconfig, EasyBCD, or any other program, so FixMBR is useless
- cannot clean install since it says there are no partitions to disk to use.
my theory then was that when i created the Ubuntu partition i have also created a boot partition for it, and i did not delete, so clearly it was interfering with Windows boot partition, so i have downloaded Partition Wizard, and saw that a partition with approximately 952 mb was labeled as "uboot", so i have deleted that, along with another "2.5GB" recovery for linux.
after that, voila! i could run EasyBCD and fix my bootmanager, or you can use another program called DualBootRepair, i ran both deleted the ubuntu entry and done a full repair on BCD and MBR.
and now i boot straight to windows 8.1 with no issues

. i hope this help guys.
p.s: if you cannot boot at all to your windows, go to BIOS "hold F8 or f12 on startup" and change your boot method from UEFI to Legacy, this for some weird reason helped me boot to windows even with the errors.