Better check if that cert is there;
Get-ChildItem -path cert:\LocalMachine\root | where Thumbprint -eq 02c2d931062d7b1dc2a5c7f5f0685064081fb221
Get-ChildItem -path cert:\LocalMachine\root | where Thumbprint -eq 98a04e4163357790c4a79e6d713ff0af51fe6927 |
There's two of them, check for both. If they're there just delete them. It might break some of the Dell bloatware that ships with the laptops. But better to live without bloatware than have some dodgy root cert that every man and his dog has the private key for.