TMGS Computer Diagnostics is a collection of the best free computer diagnostics packaged in a bootable USB flash drive format. TMGS Computer Diagnostics provides tests for the following areas: Detailed System Information, Memory Test, Hard Disk Test, Optical Drive Test, Display Test, Keyboard Test, Mouse Test, Modem Test, and Performance Test. The utilities in the zip file will create a self-booting USB flash drive. A USB flash drive of 128MB or larger is required.