thx for all valuable suggestions.
finally after trying 5 recovery softwares which all failed, i strained my brain really hard and voila!!

recalled the password. It was just 4 alpha letters.



The password was of my xp log in a/c off old system.
I should say brain recovery is the best perfect solution in such cases.

Time taken 13hrs. (1pm - 2am)
Mode: Ai (s'wares)--Failed.
Mode: Natural (self) --Success!!!
Result: A real good night sleep.
@kekerode
yup they were family snaps and to be circulated among many friends and relatives and to be protected from unwanted hands if it ever happens.---BTW it was of
puja/home of new bungalow at my native plc.