Missing Operating System + No Video/Keyboard

I've had my custom build since late November and up until this past weekend, I hadn't had a single issue out of it. When I powered my PC on Saturday morning, I was greeted with a "Missing Operating System" screen. A friend recommended that I use my Windows 8 disk and use the Automatic Repair Tool. After doing that, I was told that automatic repair could not fix the problem. I then tried the Refresh your PC option, but was greeted with this message, "The drive where Windows is installed is locked".

This is where it gets really strange. After exhausting my options on the Windows disk, I exited the program and my computer restarted. When the computer powered back up, my monitor went straight into Energy Saver mode, just an Amber light glowing. My Keyboard wouldn't kick on either. My keyboard and mouse are both Razer, and both have Blue backlights. The mouse still lights up, but the keyboard doesn't.

Everything in the case seems to be operating correctly, PSU is on, fans are spinning, hard drives are spinning, the optical drive still works, etc. I've tried re-seating all of the components, changing the battery on the MOBO, removing/changing the memory in different slots. I'm completely puzzled. It seems that the no Video/Keyboard problem is something seperate from the missing operating system that i originally had.

A couple things of note, I had my 2 WD's VelociRaptors set up in RAID-0. I hadn't downloaded anything or made any changes prior to this happening. I manually install all of my updates etc. Any help would be very much appreciated, as I'm to the point where I'm ready to take it somewhere and pay to have it fixed. Below are the components that I have. I know it doesn't make a difference, but all components are only about 4 months old.

Intel Core i5-3570k
MSI Z77A-GD55
MSI GeForce GTX 660 TF
2x WD VelociRaptor 300gb
G.Skill Ripjawz X 8gb (2x4) DDR3 2133
Corsair HX 750 PSU (Gold Certified)
Cooler Master Hyper 212 Evo
NZXT Phantom 410
Windows 8 Pro
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  1. Okay, looks like your PC isn't posting.

    I would reseat your graphics card. Completely remove it from the case and put it back in. Second, remove all of your ram and try using only 1 stick.

    I can't rule out CPU or motherbaord issues.

    You seem to be describing two issues.

    Issue 1: The PC isn't posting (monitor turns off).
    Issue 2: OS/RAID issue.

    Basically, I need more information before I can help.
  2. mjmacka said:
    Okay, looks like your PC isn't posting.

    I would reseat your graphics card. Completely remove it from the case and put it back in. Second, remove all of your ram and try using only 1 stick.

    I can't rule out CPU or motherbaord issues.

    You seem to be describing two issues.

    Issue 1: The PC isn't posting (monitor turns off).
    Issue 2: OS/RAID issue.

    Basically, I need more information before I can help.


    Thanks for the reply. I've tried everything you posted, still no luck. I forgot to add in the original post that I've tried everything that I could from the stick on this site about troubleshooting No Post/Video issues. One thing I noticed that I thought was odd is that my monitor is plugged in via HDMI through my GPU. My keyboard is USB plugged into my MOBO, and my mouse is USB plugged into my MOBO. That's why I don't understand why the Monitor and Keyboard won't work, but the Mouse does. It makes me believe that the Monitor/Keyboard aren't getting enough juice, but the Mouse is.

    One other thing of note. I have 5 LED's that are labeled CPU_PHASE LED's. My manual says, "These LED's will change according to CPU loading. The higher the power phase number, the more reliable the power flow to the processor". When everything was running fine, I'd never get more than 2-3 on at a time, and most the time they would blink continuously. Now when i power on, all 5 come on, and stay solid the entire time they're on.

    One of my co-workers said he believes that my PSU is causing the issue , I'm taking it in this afternoon for him to check it. At this point I actually hope it is a failed PSU so i can get this rig back together. It's becoming more and more frustrating by the minute.
  3. Yeah there is a possibility that the PSU is having issues or has failed.

    See if you can find one to test with. Maybe work has one. If it's the PSU then get a decent one from newegg (or similar site) for your rig.
  4. Just wanted to update, my co-worker test my PSU this evening and discovered a failed 12v Rail that he said was causing my Monitor & Keyboard to stay in Energy Saver mode. He also said that gave juice to the HDD's so that explained the "Missing Operating System" error that I originally received. I have already put in an EMA request so hopefully this fixes my issue.
  5. Good catch on the PSU. Those can be tricky... especially in this case with it exhibiting different symptoms across multiple pieces of hardware.
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