Do I need to reinstall Windows after replacing the motherboard?

After buying a new PC or replacing a motherboard, a logical question arises: “Will my old drive work with the new hardware?” And should have arisen before!

But not everything is lost – a lost license can be restored, lost drivers can be found, and the operating system can be started. Even if, after loading the BIOS, the monitor pleases you with a picture of Malevich, an old HDD or SSD will easily work with new equipment. Just need to make a couple of adjustments.

Before you start the drive with new hardware, you need to prepare. If the new equipment is already on the table, and the old one has sunk into oblivion, go straight to the “Restoring the Registry” item. These instructions are universal for the entire Windows family.

How to save a user license
If for some reason you haven’t created a Microsoft account yet, now is the time. Since the license agreement is tied to the user’s equipment, the key flies instantly and with almost a 100% guarantee.

We click on the notification icon in the tray or open the context menu through the “Start”, click on the “Control Panel” item. In the menu that opens, select “Accounts”, then “Sign in with a Microsoft account”. Register, follow the link “Create it!” We indicate the email or phone number, enter the code sent in the message.

We return to the main page by clicking on the “Update and Security” tab, select “Activation” in the menu on the left.

Click on the Add Account link and enter your details.

License recoveryWe open the already familiar “Control Panel”, the item “Updates and Security”. Go to the “Activation” tab, select the “Troubleshooting” item. In the dialog box, click on the inscription “Hardware components have recently been changed on this device.”

Then click “Activate”. You may need to enter the license key again.

Register preparation
Press Win + R on the keyboard or select “Run” from the menu by clicking the “Start” button. In the window that appears, enter the command “regedit”.

In the registry editor that opens, look for the “pciide” and “storahci” folders. The path to it is not close. You can make your life easier by copying this line:


Paste the text into the address bar after the word “Computer”.

For those who are not looking for easy ways and like to do everything themselves – double-click on “HKEY_LOCAL_MACHINE”, select the “SYSTEM” subcategory, the “CurrentControlSet” folder in it, the “Services” subfolder and finally “pciide”.

A list will open on the right in which you need to find the “Start” file. Double-click to go to the window for changing parameters, in the line “Value” set “0”, if it’s already there – do not touch anything, everything is ok!

Repeat the same for the other folder.


In some cases, users do not find “storahci” on their site. It’s okay, the system should still start.

If it doesn’t start – Kowalski, go to plan “B”!

How to restore the operating system after replacing the motherboard
Due to the changed recipes of SATA controllers, the operating system can throw out a trick called the screen of death. Most often, the error “0x0000007B INACCESSABLE_BOOT_DEVICE” is displayed on a blue background.

Don’t panic! Smile and wave.

Waving is better with a bootable USB flash drive or a disk with a copy of the operating system. Entering the BIOS (“Delete” button), you need to set the boot priority to CD-ROM or USB. More in the article .

Alternative option
In the “POST” mode, after the first boot screen, before starting the operating system, you must press F12, in some cases F8 – to select the boot method. Next, specify the carrier with the OS. In the window that appears, you will be prompted to specify the language, time format, layout, install the system again – ignore the message, go to the “System Restore” item. In the menu that opens, select “Advanced options”, “Command line” or press “Shift + F10”.

We write white on black: X: \ Source> regedit – press “Enter”.

In the right field, select the third line “HKEY_LOCAL_MACHINE”. Open the “File” menu, click “Load Hive”.

The holy of holies OS will open in front of us – the “System32” folder. In it, we are looking for the “config” subfolder with the “SYSTEM” file inside. Double-clicking will bring up a dialog box asking you to create a new partition. The name can be arbitrary, for example, “NewPC”. In the section we just created, look for “ControlSet001”, expand it to find “Services”, then “pciide”. In the “Start” file, set the value to “0”. We do everything again for the “storahci” folder in the same subdirectory. We save the changes by clicking on “HKEY_LOCAL_MACHINE”, then on “File” and the line “Unload hive”.

You can reboot and use your favorite OS!