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: new Win 7 install enable AHCI - Missing operating system

31 Aug 2014   #1
Silver007A

Win 7 Ultimate 32
 
 
new Win 7 install enable AHCI - Missing operating system

I've had some problems with drivers after installing Win 7. Got all that fixed and had a problem getting the pc switched on. Changed WOL settings and it seemed better, but I was getting a checksum error.

I then found this thread-
AHCI : Enable in Windows 7 / Vista

I followed instructions, but now after restarting it is a black screen and stuck with-

LOADING OPERATING SYSTEM...
MISSING OPERATING SYSTEM


My System SpecsSystem Spec
.
31 Aug 2014   #2
Silver007A

Win 7 Ultimate 32
 
 

By pure chance I hit F12 to see if I could get SAFE MODE but it came up with option to boot from CD / HD etc.

I chose HD and then it gave me options from USB3 or something with a long sequence of numbers. I guessed that was my hard drive. It now started Windows.

I guess that is the boot sequence?
My System SpecsSystem Spec
31 Aug 2014   #3
Silver007A

Win 7 Ultimate 32
 
 

OK, managed to change that now. Thanks
My System SpecsSystem Spec
.

Reply

 new Win 7 install enable AHCI - Missing operating system




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Win7 - 'Select the operating system you want to install' MISSING
I am installing Win7 Ultimate (CLEAN Installation) on my Desktop, and I noticed that I do not have the options to select either 64bit or 32bit as shown in the attached pic and from the below link. If I DO NOT see these options, does this mean my Win7 DVD is a OEM version? Sorry, I am rusty on...
Installation & Setup
AHCI : Enable in Windows XP after OS install
For info on other OS's take look here: http://www.sevenforums.com/tutorials/61869-ahci-enable-windows-7-vista.html You can use this method on Legacy BIOS or uEFI/BIOS firmware. For this example I am using a PC with uEFI/BIOS firmware & Secure Boot DISABLED. With a Intel Chip Set. ...
Tutorials
Missing Operating System after bad HDD driver install
Hi everybody...I have a Dell Inspiron15r model N5010 that I was trying to upgrade to windows 8 Pro when I went and downloaded many of the drivers from Dell so that I had all the latest and greatest. in my quest for quickness, I accidentally installed a driver for a HD that was listed when I meant...
Installation & Setup
Missing operating system" error massage when system starts
Hai, "Missing operating system" massage is coming when i start my system and i am not able to start. I think because , i had given "mark partition as active" option for one hard dive (E) in disk management when last time i opened. it did not have any data. i did not know, this will make any...
General Discussion
missing operating system
help needed after shutting down my pc last night when i started this morning it says "missing operating system" i try to use my windows 7 dvd nothing is working too checked the BIOS if d hard-disk is not connected but is connected help plz
Hardware & Devices
Missing operating system message, cannot re-install windows 7
Hi All, Shut down PC last night, all working perfectly. Today it won't boot with the "missing operating system" message. Have booted from Windows 7 installation disc, tried startup recovery - took 2 hours before reporting no automatic fix possible. It cannot find an installed Windows OS to...
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 12:12.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App