Digital AV Support > OS Compatibility > Windows11 compatibility > Installing HD Writer / PHOTOfunSTUDIO on Windows 11
Installing HD Writer / PHOTOfunSTUDIO on Windows10 or Windows11
In some Windows10 or Windows11 PC environments, a phenomenon is occurring wherein after installing the software, the PC does not start or a warning about loading the driver is displayed due to a conflict with the write driver.
Before installing, please read the following carefully.
Workaround
* Make sure to perform the following before software installation.
- Click [Windows Security] from the start menu
![Click [Windows Security]](image/info01.jpg)
- Click [Device security]
![Click [Device security]](image/info02.jpg)
- Click [Core isolation details]
![Click [Core isolation details]](image/info03.jpg)
- Set [Memory integrity] to Off
![Set [Memory integrity] to Off](image/info04.jpg)
* If [Core isolation] is not displayed in Step 3, proceed to install the software.
[Core isolation] may not be displayed depending on the PC specifications or environment.