This is the easiest method and should be tried first.
The Seiki SK720T is a 27-inch LED monitor. While most monitors will work with Windows' default "Generic PnP Monitor" drivers, installing the specific Seiki driver can resolve issues such as: seiki sk720t driver install
After installation, go to Settings > System > Display > Advanced display and set resolution to 1920 x 1080 and refresh rate to 60Hz. This is the easiest method and should be tried first