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Win 10 won't boot except to Safe Mode

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Curtis:
I was able to reinstall windows and save files.  Now boots normally but very slow.  I completed all of the updates.
USB ports are not recognized, however.  USB doesn't even show up in Device Manager.  Tried to find a USB controller driver online but can't find one for this Lenovo Thinkpad E520 laptop.  Has Intel i5 chip.  Lenovo doesn't provide it.  They seem to only have Windows 7 host controller drivers.
Thanks for all of your help so far but there's a new problem to tackle.

Boggin:
Try the Win 7 ones - it's surprising what Win 7 drivers work okay in Win 10.

How slow is the boot up ?

Curtis:
I installed USB3.0 Host Controller Driver.exe for Win 7 64bit from the Lenovo site but still no usb showing up in device manager.
The startup time has improved since I removed some of the items from Startup.  It takes about 3 1/2 minutes from starting until Task Manager shows a 0 for CPU.

Boggin:
I consider the startup time from switching on to seeing the desktop and it can take Task Manager a little while to settle down after boot up.

Without going into Task Manager after booting, do you see a blue busy circle on the screen ?

I'm not sure if initially turning off fast startup and a reboot would reinstate the USB controllers or not, but give that a try.

You could also try the steps in this article to see if they help -

http://www.thewindowsclub.com/usb-devices-not-working-windows

Boggin:
I forgot to ask - did that Upgrade now button from the link work in Safe Mode ?

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