Dear Abhinav, there have been reports of website not working since the final registration process. That might be the reason why you are unable to proceed further. If you have generated the code the next step is to fill in the Qualification details. Before anything please remember that there is no correction window for final registration. What you enter there stays there. So be careful. Now please select the language in which you prefer to write the exam. If you have appeared earlier for AIIMS MBBS, select as 'Yes' for the next question and if its your first time, select 'No'. Fill in your qualification details. Pkease dont confuse between the PCBEsubjects aggregate and total aggregate. Next is the payment step. You can make payments either through Debit/Credit/Net banking. You may face issues while and after making payment but save the transaction details for future reference. Next is the city in which you want to take up the exam. Lastly, take a print out of the confirmation page. As mentioned earlier you will face issues all through the process. Students cleared the cache, browsing history, restarted their device and relogged in. And it worked for them. You can try that as well.