Missing Operating System Tags: BIOS Computers Windows 7 Last response: December 24, 2012 11:48 PM in Windows 7 Share Pilot996 December 24, 2012 11:14:06 PM I am building a computer for the first time ever. I turn on the computer, the BIOS screen flashes and then a black screen appears displaying the text "Missing operating system." I am booting my Windows 7 from a flash drive, if this helps. More about : missing operating system Brett928S2 a b $ Windows 7 December 24, 2012 11:18:18 PM Hi Then go into Bios and tell it to BOOT from USB...FIRST ! All the best Brett Pilot996 December 24, 2012 11:20:38 PM I have a ASRock Z75 Pro3 Motherboard if that helps. I cant find the option. Related resources Missing Operating System on Backup HD - Forum Why to do if my gateway desktop says missing operating system - Forum [HELP] Missing operating system - Forum Windows 7 missing operating system error - Forum site:tomshardware com missing operating system windows 7 desktop on boot - Forum Can't find your answer ? Ask ! Get the answer Brett928S2 a b $ Windows 7 December 24, 2012 11:22:22 PM Pilot996 said:I have a ASRock Z75 Pro3 Motherboard if that helps. I cant find the option. Hi Look for BOOT OPTIONS or BOOT ORDER... they are in there.... All the best Brett Pilot996 December 24, 2012 11:48:30 PM I found a guide, how do I know if my mobo is UEFI or BIOS? Can't find your answer ? Ask ! Publish Related resources: Forummissing operating system error in acer lap top ForumHow to repair missing operating system in asus laptop computer ForumMissing Operating System - Kaspersky ForumMissing operating system after bios flash and ram upgrade ForumMissing Operating System ForumMissing operating system ForumWhat can be the cause if a system is say missing operating system on xp ForumAlienware aurora overclocking missing operating system Forum" Missing operating system " error massage when system starts ForumMissing Operating System and Can't Boot From CD ForumMissing operating system help ForumWhy did Bill Gates invent Windows? ForumHow to repair missing operating system in asus laptop computer ForumOperating system restore with disc, missing drivers/software ForumMissing Operating System - Kaspersky More resources Read discussions in other Windows 7 categories Configuration Customization Drivers Security Laptops !