i tried many P&Cs and the working one was:
removing ntldr from D: gave the error ntldr missing placing one in C: didn't help
removing ntdetect.com from C: restarted my PC placing this file on D: instead didn't help
removing boot.in from C: and placing it on D: gave an error "ntoskrnl.exe is corrupt"
thanks to everyone who posted here
mods can lock the thread if they want