Win7 64 bit fully patched (up to patch update April 2016) got into issues after receiving April update. Windows shutdown unexpectedly and after restart it looked like it came into a boot loop.
One of the things was >50% CPU for svchost and everything else brought the cpu to 100%
I suspected a temperature issue due to the high cpu but I came across an article which solved it.
What I did to resolve it was found in this article:
Set windows update to "Never check ..."
Reboot pc and now CPU load was back to normal
KB3145739 manually. Go to Microsoft website to download and then install.
Next you should restart and finally you can check for updates in manual mode.
Doing manual update after KB3145739 install showed 14 updates left
These patches installed fine while watching CPU load en CPU Temp and the pc went installing these patches without a hitch.