I searched the previous posts and found a similiar instance under "Windows NT /2000/XP" where a guy had no safe mode and continious boot loop. Unfortunately that case went unresolved since he was working with boot leg software.
It seems I have encountered this same problem, less my software is not boot leg.
I think mine is a virus as my husband said he tried to download the latest version of Malware bytes when it said it detected a malicious threat and started the reboot loop. Hated to start a new thread since there was already brain storming on this same subject. . . . . .
I originally posted under the other thread but got no response so I started a new thread today and I am hoping someone will be able to help me.