Following recent MS updates on W7 desktop I had a series of crashes reported as Power kernel errors. In the end, to my shame, I found my fan/ heat sink had seized and was full of dust with fan bearings defunct. Crashes happened when trying to run Avira scans etc. I originally thought the updates were to blame.A Novatech £4.99 new fan / heat sink cured it!! What an idiot; I did not notice excessive heat from the tower.I share this as a few others may find it useful!
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