diff --git a/doc/changes/dev/13593.other.rst b/doc/changes/dev/13593.other.rst
new file mode 100644
index 00000000000..fe9694f2c92
--- /dev/null
+++ b/doc/changes/dev/13593.other.rst
@@ -0,0 +1 @@
+make :func:`mne.sys_info` work on Windows systems with Powershell version 7+, by `Marijn van Vliet`_
diff --git a/mne/io/egi/events.py b/mne/io/egi/events.py
index 9c853dd73eb..c160ceb208c 100644
--- a/mne/io/egi/events.py
+++ b/mne/io/egi/events.py
@@ -68,7 +68,7 @@ def _read_mff_events(filename, sfreq):
             marker = {
                 "name": event["code"],
                 "start": start,
-                "start_sample": int(np.fix(start * sfreq)),
+                "start_sample": int(np.trunc(start * sfreq)),
                 "end": start + float(event["duration"]) / 1e9,
                 "chan": None,
             }
diff --git a/mne/preprocessing/infomax_.py b/mne/preprocessing/infomax_.py
index b445ac7116c..8880a0f280f 100644
--- a/mne/preprocessing/infomax_.py
+++ b/mne/preprocessing/infomax_.py
@@ -247,7 +247,7 @@ def infomax(
                     oldsigns = signs
 
                     if signcount >= signcount_threshold:
-                        ext_blocks = np.fix(ext_blocks * signcount_step)
+                        ext_blocks = np.trunc(ext_blocks * signcount_step)
                         signcount = 0
 
         # here we continue after the for loop over the ICA training blocks
diff --git a/mne/utils/config.py b/mne/utils/config.py
index 9d5cf9f3c40..4bc90072401 100644
--- a/mne/utils/config.py
+++ b/mne/utils/config.py
@@ -681,11 +681,9 @@ def _get_gpu_info():
 def _get_total_memory():
     """Return the total memory of the system in bytes."""
     if platform.system() == "Windows":
+        ps = shutil.which("pwsh") or shutil.which("powershell")
         o = subprocess.check_output(
-            [
-                "powershell.exe",
-                "(Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory",
-            ]
+            [ps, "-c", "(Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory"]
         ).decode()
         # Can get for example a "running scripts is disabled on this system"
         # error where "o" will be a long string rather than an int
@@ -708,8 +706,9 @@ def _get_total_memory():
 def _get_cpu_brand():
     """Return the CPU brand string."""
     if platform.system() == "Windows":
+        ps = shutil.which("pwsh") or shutil.which("powershell")
         o = subprocess.check_output(
-            ["powershell.exe", "(Get-CimInstance Win32_Processor).Name"]
+            [ps, "-c", "(Get-CimInstance Win32_Processor).Name"]
         ).decode()
         cpu_brand = o.strip().splitlines()[-1]
     elif platform.system() == "Linux":
diff --git a/mne/viz/utils.py b/mne/viz/utils.py
index 9c71714040a..5f624730b8d 100644
--- a/mne/viz/utils.py
+++ b/mne/viz/utils.py
@@ -1926,7 +1926,7 @@ def _setup_ax_spines(
 
         def log_fix(tval):
             exp = np.log10(np.abs(tval))
-            return np.sign(tval) * 10 ** (np.fix(exp) - (exp < 0))
+            return np.sign(tval) * 10 ** (np.trunc(exp) - (exp < 0))
 
         xlims = np.array([xmin, xmax])
         temp_ticks = log_fix(xlims)