How do I regain access to my data with an new user account in Windows?

Episode 1706 (1:52:23)

Tom from Los Angeles, CA
Windows 10

Tom is having issues with Windows denying access to his hard drives after creating a new user account. It says "access denied." Leo says that could be a permissions system since it's a multi-user system. Go into security settings and take ownership of the contents of the drive. Sometimes the issue is a hardware issue where the drive is protected by a password in BIOS, but Leo doesn't think that's the case since Tom created a new user account. So taking control of the data through Windows security settings is the answer. Or, since Tom doesn't care about what's on the hard drive, delete the partitions through disk manager, and create a new partition that's the size of the drive, and format it.