common: Fix WMI exception (#1422)

* common: Fix WMI exception

We currently don't check if WMI service is available when we get the CPU name and the RAM size.
This fix the issue by catching all exceptions and set default values instead.

Close #1353

* remove useless assign

* Fix Exception

* Address comments

Co-authored-by: Thog <me@thog.eu>

Ryujinx.Common/SystemInfo/WindowsSystemInfo.cs

@@ -1,4 +1,7 @@
+using Ryujinx.Common.Logging;
+using System;
 using System.Management;
+using System.Runtime.InteropServices;
 
 namespace Ryujinx.Common.SystemInfo
 {
@@ -8,6 +11,10 @@ namespace Ryujinx.Common.SystemInfo
         public override ulong RamSize { get; }
 
         public WindowsSysteminfo()
+        {
+            bool wmiNotAvailable = false;
+
+            try
             {
                 foreach (ManagementBaseObject mObject in new ManagementObjectSearcher("root\\CIMV2", "SELECT * FROM Win32_Processor").Get())
                 {
@@ -19,5 +26,21 @@ namespace Ryujinx.Common.SystemInfo
                     RamSize = ulong.Parse(mObject["TotalVisibleMemorySize"].ToString()) * 1024;
                 }
             }
+            catch (PlatformNotSupportedException)
+            {
+                wmiNotAvailable = true;
+            }
+            catch (COMException)
+            {
+                wmiNotAvailable = true;
+            }
+
+            if (wmiNotAvailable)
+            {
+                Logger.PrintError(LogClass.Application, "WMI isn't available, system informations will use default values.");
+
+                CpuName = "Unknown";
+            }
+        }
     }
 }