Added PC - DF checks

Writerside/hi.tree

@@ -7,6 +7,7 @@
 
     <toc-element topic="Hello-World.md"/>
     <toc-element topic="Day-to-Day-Checks.md">
+        <toc-element topic="PC-Startups-and-DeepFreeze.md"/>
         <toc-element topic="Lab-AV.md"/>
     </toc-element>
 </instance-profile>

Writerside/topics/PC-Startups-and-DeepFreeze.md

@@ -0,0 +1,25 @@
+# PC Startups and DeepFreeze
+
+## Overview
+Ok, this really is kinda our Bread-and-Butter, and we need to make sure they're all working correctly. No PCs, no teaching, sad students, crap NSS.
+
+## Aims
+To ensure all PCs are starting up and working correctly, and that DeepFreeze is correctly communicating with them.
+
+## Gotchas!
+* **WoL (as of the time of writing) doesn't work correctly in INB2102/2B - you'll have to run around manually**
+
+## Procedure 
+* Log in to DeepFreeze and navigate to the "Computers" tab
+* We will be using the built in Wake-on-LAN feature to turn on and test communication with all PCs
+   * Due to the nature of WoL, we have to stagger the startup of all PCs - we do this manually 
+   * Using the search bar under "Computer Name" search 1 row of desks at a time, like 1A-A
+   * Select all PCs under that search term and click "Wakeup" from the actions row
+   * **Repeat for all rows in all labs! It doesn't take long, promise!**
+* Once that has been done for all PCs, visit each lab and check everything is on
+  * Is a PC off? It could be a case of the WoL packet didn't reach the PC - try turning on manually and checking network connections. Sometimes it just doesn't work for some reason
+  * If a PC fails to turn on or boot at all, quickly investigate as to why, and prepare it for a repair if needed
+  * Because lab sessions are _sometimes_ underbooked, have absences or have people using BYOD, a PC being out of action for a day is not a huge issue. However, to maintain appearances we do need to ensure we get a fix sorted ASAP
+* Nothing turned on at all?
+  * Is the power actually working? If no PC turns on it could be an issue with some of our circuits - a diagnostic will be outlined in an upcoming docs page
+  * If PCs do turn on manually, it could be an issue with DeepFreeze, or, Networks