Specifications

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1. Connect an external USB DVD-ROM to your SR820 machine.
2. Put the service DVD into the USB DVD-ROM and turn-off system.
3. Press power button to turn on the system, then press “Del” key to
enter BIOS setup menu.
4. Move to Advanced BIOS Features setup menu and set USB DVD-
ROM to priority 1st, HDD to priority 2nd, then put recovery DVD
into DVD-ROM. Then save and exit BIOS setup menu to reboot
system.