Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: "missing operating system" and other pleasurable stuff...

25 Mar 2015   #11
Microsoft MVP


If you can boot into the OS or Safe Mode, try working through the Troubleshooting Steps for Windows 7.]

If it becomes unstable so you need to work from boot mode, then switch to Troubleshooting Windows 7 Failure to Start

My System SpecsSystem Spec
26 Mar 2015   #12

Microsoft Windows 7 Professional 64 bit 7601 Multiprocessor Free Service Pack 1

Thank you all for your help, I'll try to put your suggestions in practice.
Best regards.
My System SpecsSystem Spec

 "missing operating system" and other pleasurable stuff...

Thread Tools

Similar help and support threads
Thread Forum
Windows 7 boot SSD now in RAW format! "missing operating system"
Hi, I am a newbie here, so apologies for the long post. My PC recently went into hibernation mode, and soon after i restarted windows noticed sector errors and fixed them. HOWEVER, since then it will not start windows, and now it tells me "missing operating system" I can access the...
Installation & Setup
Wiping System to Re-install Win 7 - now "missing operating system"
I thought I would do a 'clean install' of Win 10 on my laptop. Used Killdisk to get rid of 2 of 3 partitions on my hard drive (not the OS partition). I must have done something wrong because now my system will not reboot. All I get is a message saying: "missing operating system". I tried to reboot...
Installation & Setup
Boot Mischief: What causes "Missing Operating System" msg?
Hi, I'm a :confused: novice, but puzzled, I love getting to the bottom of things. Here's one I'm working on, but I'm at an impasse (I'm going to run out of time, school starts next week): After a re-install of Win7 Pro on Lenovos Desktop with WD5000AAKS drive, I get "Missing Operating System"...
Installation & Setup
Sony Vaio Win7 "Operating System Not Found" - missing data files
This is a client's pc. SONY VAIO All In One VPCL21AFX/B recvd a "Operating System Not Found" error msg when starting after normal shutdown rebooted w/o external devices, same error F8 didn't work F12 put it into a Sony repair menu Esc'd out to Win menu Command Line "bootrec.exe /fixmbr" -...
General Discussion
Win7 pro startup error "Boot MGR missing"/"Operating System Not Found
I just upgraded from Vista Home Premium to Win7 professional x64 hoping to fix the above mentioned problem. After a complete re-install Im getting the same errors. Im not sure of the proper terminology here, but during startup the computer does a scan of all hardware and "Volume 0" has a...
Installation & Setup

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 14:53.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App