Today I came upon some methods of resetting a lost Windows password: Reset Windows 7 Admin Password with Ubuntu Live CD/USB - chntpw 5 Ways to Reset Windows 7 Password without A Reset Disk 7 Free Windows Password Recovery Tools I hope these will be helpful for others who forgot their login...
It should be a folder permission issue. You might need to take ownership & grant full access permission to your currently logged on user. If you don't know how to do, you can use the freeware TakeOwnershipPro.
Most new computers still provide legacy boot for backwards compatibility. However, there are some tablets that can boot in native UEFI mode only, such as Surface Pro 4. UEFI secure boot will block almost all traditional MBR-based bootdisk, you have to use GPT-based bootdisk.
Try to reopen Windows Explorer and run it as administrator. Follow these steps: 1. Open the task manager. Find the process "Explorer", right-click on it and terminate the process. 2. Click the File menu, select "Run new task". 3. Type explorer, and tick the checkbox "Create this task with...