Need help. NIS drops after 800k sync block

Is this something going on in my machine or is it at your end? I have tried rebooting many times, disabled antivirus, ect. Thanks in advance.

Ok. I went to the NIS folder and modified the logalpha file by replacing INFO with WARNING. The nis file also stopped at the end around block 800,000 and this is the picture that I took of it. Can someone help? Thanks.

Here is the latest picture under NIs logalpha using INFO instead of Warning and It finally says that part of the file is corrupted. Is this something at my end or yours? Please advise. Thank you.