I dropped my Toshiba Laptop model C855-S5347, such damaged the hard drive.
I did not discover the damage until I ordered a recovery USB disk which failed to recover windows 8.
I also purchased an external hard drive, but was unable to use such as a bootable hard drive as I could not initialize such drive because the internal hard drive was damaged, and thus precluded access to disk management features.
I used the CHKDSK/F/R command, which started to fix and recover the drive including bad sectors caused by the previous drop incident, in the process of such repair, the computer screen went completely blank (White), the screen has remained in this state to date.
I tried to find the bios jumpers, but realized that UEFI firmware replaces previous bios structure.
I have exhausted all possibilities known to me and am now seeking expert assistance in recovery of my windows 8 configuration.