Dell D16M or 3847 with W8.1. This system became badly infected. I would like to simply restore the system to a factory restore. I do not have a recovery DVD or Flash drive. I've tried using Shift and tapping the F8 key but cannot get it to find the recovery partition. The system will boot and allow me to enter a password but from there is simply goes to a blank screen. Moving the cursor to the upper right corner does not do anything. I've run the DELL diagnostics and they all ran OK. Any ideas on how to restore this back to factory level? There is no substantial data on the system.