URGENT LAPTOP Help-STUCK ON UPDATES?

I went to go on my laptop this morning and noticed that it was still doing updates from the night previous. It got to 100% quite quickly and wasn't slow or anything but now it's stuck on 100%. I've tried resetting it by keeping hold of the power button for 3 seconds and also taken the battery out but when I turn the laptop on it returns back to the same screen. The loading symbol is still moving and I can still move the cursor. Any help would be fantastic.
Additional:
laptop is a Lenovo
I have windows 8

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