MACBOOK SUDDENLY RUNS INTO SAFE BOOT: AND REJECT A VALID PASSWORD- PLEASE HELP ME

)my mac book pro @Safe Boot when I powered it on yesterday.So, this Safe Boot requested the password, and I remember that password very well since I have never changed However, the computer keep rejecting my entry. However, I realized it ran so slow and behaved strangely. For example; in Safari, every time a hyperlink is clicked; it will go to the reading list, and I tried to mac factory reset without disk but when I erased the hard give me an error and I found that my keyboard number is writing form 0 to 9 write @. % instead of number for example when I write 9 give me ( and 5 give me %

And my password was only number what can I do ?