Merge pull request #315 from xcp-ng/blueiris

docs/troubleshooting: Add workaround for Arch LBR BSOD

docs/troubleshooting/windows-pv-tools.md

@@ -60,4 +60,37 @@ It's possible that some antivirus blocks the end of the installation of the PV d
 
 ### Solution
 
-Simply pausing the agent and doing a reboot will make the XenTools to install succesfully. After a succesfull installation, enabling the SentinelOne agent again is possible without any other issues regarding the tools or drivers.
+Simply pausing the agent and rebooting will allow the PV drivers to install successfully.
+After a successful installation, enabling the SentinelOne agent again is possible without any other issues regarding the tools or drivers.
+
+## Low storage performance on Windows
+
+### Cause
+
+Virtual disks on Windows VMs may perform poorly if the system power profile is not set to Performance.
+
+### Workaround
+
+As reported by [nesting4lyfe2024](https://xcp-ng.org/forum/user/nesting4lyfe2024), [marcoi](https://xcp-ng.org/forum/user/marcoi) and [wiseowl](https://xcp-ng.org/forum/user/wiseowl) on the XCP-ng forum ([link](https://xcp-ng.org/forum/topic/10375/slow-windows-11-guest-vm-virtual-disk-performance-on-r730-w-h730-controller-but-all-other-oses-are-fast-normal)).
+
+Set your BIOS power profile to "Performance" or "Performance Per Watt (OS)".
+Consult your motherboard manual for details; for example, on Dell systems with iDRAC Enterprise, this setting may be found at Configuration - BIOS Settings - System Profile Settings - System Profile:
+
+<div style={{textAlign: 'center'}}>
+![](../../static/img/performance-setting.png)
+</div>
+
+## Windows bug check 0x3B (SYSTEM_SERVICE_EXCEPTION) on systems with newer Intel CPUs
+
+### Cause
+
+Intel CPUs codenamed Rocket Lake, Sapphire Rapids and newer provide the **Architectural LBR** feature, which Windows depends on.
+Xen's support of this CPU feature is incomplete, which causes Windows to crash when using certain applications (e.g. Blue Iris: [forum link](https://xcp-ng.org/forum/topic/8873/windows-blue-iris-xcp-ng-8-3), [GitHub issue](https://github.com/xcp-ng/xcp/issues/565)).
+
+### Workaround
+
+Stop the VM, run the following command on the host then restart the VM:
+
+```
+xe vm-param-add uuid=<VM's UUID> param-name=platform msr-relaxed=true
+```