|... sounds like the pc may of had a "bios shock" or the cmos battery (watch type) may be discharged so the chip is no longer holding the settings (battery may last 5 years)|
... enter your bios and alter the bootup sequence settings from "pxe boot to Lan" or disable this setting (... or similar boot to network)
... save settings on exit of your bios, if the dates are scrambled and it wo'nt save settings then replace the cmos battery!
... Posting is provided "AS IS" with no warranties