The forms on which you have to apply for indefinite leave to remain in the UK can be found on the GOV.uk website. This page will lead you through a series of questions about your immigration status and will tell you which form you need. The two main forms are listed below.
You can now choose an option using your keyboard (number keys or function keys). To start up in Safe Mode, press 4 or F4. To start up in Safe Mode with networking, press 5 or F5. To start up in Safe Mode with the Command Prompt, press 6 or F6. If you change your mind and decide you don't want to boot into Safe Mode after all, hit Enter to boot normally.
Sometimes the black screen problem keeps happening because fast startup is enabled on your computer. While in Safe Mode, you can use the following steps to disable fast startup: Open Control Panel. Click on System and Security. Click on Power options. Select the Choose what the power button does link on the left pane.