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"Missing operating system"

post #1 of 3
Thread Starter 
Just installed win & on my new System Yesterday. Today i was installing some drivers and run some SSD benchmarks. At last i just completed some windows updates and updated to latest mobo bios with Live Update with @BIOS. When i restarted to complete windows and BIOS update, i now come up with the "Missing operating system" error after POST.

Any idea? Was the BIOS upgrade so harsh? Do i have to reinstall windows again?
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post #2 of 3
Quote:
Originally Posted by therock003 View Post
Just installed win & on my new System Yesterday. Today i was installing some drivers and run some SSD benchmarks. At last i just completed some windows updates and updated to latest mobo bios with Live Update with @BIOS. When i restarted to complete windows and BIOS update, i now come up with the "Missing operating system" error after POST.

Any idea? Was the BIOS upgrade so harsh? Do i have to reinstall windows again?
The last time this happened to me, I was able to fix it using "bootrec /FixMBR" along with "fixboot /FixBoot" (but these aren't case-sensitive). Here's how to do it:
  1. Boot from the Windows 7 DVD
  2. When you see this, click "Next"
  3. On the next prompt, click "Repair your computer" (so, don't click "Install now")
  4. You'll see a little window appear named "System Recovery Options" which will immediately search for Windows installations
  5. When it finishes, you will see a dialog box. Select "Use recovery tools that can help fix problems starting Windows. Select an operating system to repair." and then click Next.
  6. Click "Command Prompt"
  7. Once in the command prompt, type bootrec /fixmbr, press Enter, and then type bootrec /fixboot and press Enter again.
  8. After this, type Exit and press Enter
  9. Click the Restart button

If this doesn't fix it, then I recommend repeating the above, except this time only use bootrec /rebuildBCD instead of the other two commands because it would just be redundant to issue those commands again. Then, of course, type Exit, press Enter, click Restart.

If it's still not fixed after that, then I admit that I wouldn't know what else to try. Although, I suppose you can also try bootrec /ScanOS, but I wouldn't know what to do with the results. And again, none of these commands are case-sensitive.
Edited by TwoCables - 12/19/10 at 4:49pm
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250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 3
Thread Starter 
Thank You for your suggestion but actually it just erased BIOS settings and my 2 SSD's were no longer seen as RAID. Set the setting back to RAID, and hopefully now i'm back into the OS.
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CPUMotherboardGraphicsRAM
Athlon 64 II x4 640 Gigabyte 880-GA UD3H rev2.1 Gigabyte Radeon 5770 Silent Cell 2x 2GB Kingston 1333 DDR-3 
Hard DriveOSPowerCase
2x Vertex 2 (RAID 0) + 4 Samsung F4 Storage Windows 7 Home Premium Seasonic X-650 CoolerMaster HAF 912+ 
  hide details  
Reply
Server
(13 items)
 
  
CPUMotherboardGraphicsRAM
Athlon 64 II x4 640 Gigabyte 880-GA UD3H rev2.1 Gigabyte Radeon 5770 Silent Cell 2x 2GB Kingston 1333 DDR-3 
Hard DriveOSPowerCase
2x Vertex 2 (RAID 0) + 4 Samsung F4 Storage Windows 7 Home Premium Seasonic X-650 CoolerMaster HAF 912+ 
  hide details  
Reply
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