"could not initialize the hardware watchdog"

Question

Today my MacPro (Late 2013) froze. After a hard reset and boot into secure mode my Console shows hundreds of messages like this:Feb 27 09:57:14 xxxxxs-compute com.apple.xpc.launchd[1] (com.apple.watchdogd): Service only ran for 0 seconds. Pushing respawn out by 10 seconds.Feb 27 09:57:24 xxxxxs-compute.peithner.intern watchdogd[5824]:  [watchdog_daemon] @(    wd_watchdog_open) - IOIteratorNext failed (kr&#x3D;0)Feb 27 09:57:24 xxxxxs-compute.peithner.intern watchdogd[5824]:  [watchdog_daemon] @(      wd_daemon_init) - could not initialize the hardware watchdogFeb 27 09:57:24 xxxxxs-compute.peithner.intern watchdogd[5824]:  [watchdog_daemon] @(                main) - cannot initialize the watchdog serviceI goggled this problem and found a very long script on the Apple Support forum, that lead to this output:Start time: 09:40:12 02/27/15Model Identifier: MacPro6,1System Version: OS X 10.10.2 (14C109)Kernel Version: Darwin 14.1.0Boot Mode: SafeTime since boot: 12 minutesUSB   Voyager GTX (CORSAIR MEMORY INC.)   USB Receiver (Logitech Inc.)Log   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:28:33 BUG in process suhelperd[196]: over-released legacy external boost assertions (1 total, 1 external, 0 legacy-external)   Feb 27 09:29:07 BUG in process suhelperd[196]: over-released legacy external boost assertions (0 total, 0 external, 0 legacy-external)kexts   com.Logitech.Control Center.HID Driver (3.9.1)   com.Logitech.Unifying.HID Driver (1.3.1)launchd   /System/Library/LaunchDaemons/com.apple.installer.osmessagetracing.plist   - 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Linc Davis · Accepted Answer

ARemove the Norton/Symantec product by following these instructions. If you have a different version of the product, the procedure may be different.Back up all data before making any changes.BUninstall "SIMBL" or "EasySIMBL" as follows. Back up all data before making any changes.Triple-click anywhere in the line below on this page to select it, then copy the text to the Clipboard by pressing the key combination command-C:/LibraryIn the Finder, select          Go ▹ Go to Folder...from the menu bar, paste into the box that opens by pressing command-V, then press return. A folder will open. From that folder, delete the items listed below (some may be absent.) You may be prompted for your administrator login password.          Application Support/SIMBL          InputManagers/SIMBL          LaunchAgents/net.culater.SIMBL.Agent.plist          LaunchAgents/net.infinite-labs.SIMBLEnablerForSandboxedApps.plist          ScriptingAdditions/EasySIMBL.osax          ScriptingAdditions/SIMBL.osaxLog out and log back in. There may also be an item named "EasySIMBL" in the Applications folder. Delete it, if so.Make sure you never reinstall any variant of SIMBL. It’s likely to come bundled with another third-party system modfication that depends on it. If you want trouble-free computing, avoid software that makes miraculous changes to other software, especially built-in applications. The only real exception to that rule is Safari extensions, which are mostly safe, and are easy to get rid of when they don’t work. SIMBL and its dependents are not Safari extensions.CAlso remove "TechTool" and "Cocktail."Any third-party software that doesn&#x27;t install by drag-and-drop into the Applications folder, and uninstall by drag-and-drop to the Trash, is a system modification.Whenever you remove system modifications, they must be removed completely, and the only way to do that is to use the uninstallation tool, if any, provided by the developers, or to follow their instructions. If the software has been incompletely removed, you may have to re-download or even reinstall it in order to finish the job.I never install system modifications myself, and except as stated in this comment, I don&#x27;t know how to uninstall them. You&#x27;ll have to do your own research to find that information.Here are some general guidelines to get you started. Suppose you want to remove something called “BrickMyMac” (a hypothetical example.) First, consult the product&#x27;s Help menu, if there is one, for instructions. Finding none there, look on the developer&#x27;s website, say www.brickmymac.com. (That may not be the actual name of the site; if necessary, search the Web for the product name.) If you don’t find anything on the website or in your search, contact the developer. While you&#x27;re waiting for a response, download BrickMyMac.dmg and open it. There may be an application in there such as “Uninstall BrickMyMac.” If not, open “BrickMyMac.pkg” and look for an Uninstall button. The uninstaller might also be accessed by clicking the Customize button, if there is one.Back up all data before making any changes.You will generally have to restart the computer in order to complete an uninstallation. Until you do that, there may be no effect, or unpredictable effects.If you can’t remove software in any other way, you’ll have to erase and install OS X. Never install any third-party software unless you&#x27;re sure you know how to uninstall it; otherwise you may create problems that are very hard to solve.Trying to remove complex system modifications by hunting for files by name often will not work and may make the problem worse. The same goes for "utilities" such as "AppCleaner" and the like that purport to remove software.