Improve Windows hashsum check

Author: lambdakilo

src/content/docs/cachyos_basic/download.mdx

@@ -29,14 +29,14 @@ Always take the extra step of verifying the ISO's integrity to avoid any undesir
 
 <Steps>
 
-1. Download the [file](https://mirror.cachyos.org/ISO/desktop/260308/cachyos-desktop-linux-260308.iso.sha256) containing the SHA256 hash **(Open it with a text editor, e.g., Notepad)**.
-2. Open CMD or PowerShell as Administrator and [navigate](<https://www.wikihow.com/Change-Directories-in-Command-Prompt>) to the path where the ISO and SHA256 files are stored.
+1. Download the [file](https://mirror.cachyos.org/ISO/desktop/260308/cachyos-desktop-linux-260308.iso.sha256) containing the SHA256 hash.
+2. Open CMD or PowerShell and [navigate](<https://www.wikihow.com/Change-Directories-in-Command-Prompt>) to the path where the ISO and SHA256 files are stored.
 3. Execute the following command:
    ```powershell
    # Example:
-   certUtil -hashfile cachyos-desktop-linux-260308.iso SHA256
+   powershell powershell "sv f (-split (Get-Content 'cachyos-desktop-linux-260308.iso.sha256')); if (((certutil -hashfile (gv f -v)[1] SHA256)[1] -replace ' ','') -eq (gv f -v)[0]) { 'OK' }"
    ```
-4. Compare the certUtil hash output to the one from the downloaded file in **Step 1**. If they match, you may proceed with the CachyOS installation.
+4. If the output from **Step 3** is OK, you may proceed with the CachyOS installation.
 
 </Steps>