1
Are you able to force your laptop into the recovery environment using these steps.
Start your PC, just as Windows attempts to load (spinning dots), press and hold Power Button for 5 - 10 seconds to perform a Hard Shut Down
Do this twice
On the third start Windows will boot into the Recovery Environment and from there you can access System Repair, Safe Mode, Command Prompt... etc.
2
If not, when you start your laptop, is there nothing on the screen, not even the laptop manufacturers logo screen before WIndows attempts to boot up?
If there is nothing on the screen, just a black screen when you start your laptop:
Disconnect the laptop from mains electricity.
Press and hold the power button on the case of your laptop for 30 seconds.
Wait 30 minutes
Reconnect the power cable and start your laptop, is there an image on the screen and if so, does it boot into Windows?