It is really good to know that you have that passion to start your career again. It matters how long your gap was and it was also without any experience, but it is never late to start anything. There are many companies who actually hire people who have the knowledge and they do not check your background, your marks anything. Just they need a knowledgeable person. Once you have thought of starting your career, make sure you are dedicated to it and you need to learn things very fast and side by side can apply for jobs.
Take up some course like Java or python and start dedicating your maximum time on that. Reach out to your friends who are already working and try to get some referrals. Try every possible way to get a job as fast as possible.