Oneplus One freezes after pin-entry, propable culprit: android marshmallow, Google play services

[AC Question]

heya guys,
i could make use of some help. I updated to android marshmallow a couple of days ago and started to realize a radical drop in battery performance. Today i thought i should find out why. so i checked options -> battery -> there i can see the usage of the battery, what used it and how much. Google play services (translating free from my head, so please excuse me if it is called something else in english) used around 70% of my battery withing around 2 hours. naturally i tried to fix the issue which was most likely caused by a bug. i googled a little bit and found that people recommanded to turn off "auto start google play services when booting phone (or sth similar, still no englishman here)". so i went (i think) to apps -> google play services -> auto start when booting, and turned it off..BLAMM! cell froze and only force chocking it off (holding the lock-key down for 7 secs) did result in a reaction. so it restarted and when hit "enter" after entering my pin-code it froze again. that is pretty much where i am now...sadly this is kinda urgent cause i do really need my phone today. otherwhise i wouldnt have bothered you and tried to solve the issue myself, as usually.
anyways, if someone knows something please help me

 

[Golfdriver97]

Welcome to the forums. Play services is needed for a lot of things. I believe that is also what confirms your credentials when unlocking the device. I think your best bet right now is to reset the device.

 

[VioDes]

@golfdriver97 how exactly do i do that? + is there any way of not loosing all my files? ty for your answer

 

[Golfdriver97]

Resets in theory don't wipe your personal files, but I always assume they will. However, since you can't open the device to pull the files off, there momst likely isn't a way to back everything up, either.

From 1+One website: If you're having trouble with your OnePlus handset that may be related to software, try performing a full factory reset.Back up all your important files and information, as the process may erase all data.

• OxygenOS - Power off your device Press and hold volume down + Power button. ( device will boot into recovery mode ) Select Language Select Wipe data and cache > Wipe data and cache and tap Yes Now Reboot system from " Reboot" option.
• Cyanogen OS - Power off your device Press and hold volume down + Power button. ( device will boot into recovery mode ) Select Wipe data/factory reset > Yes-- delete all user data Select Wipe cache partition ( You'll notice Android bot with erasing... for a second ) Select Reboot system now

 

[VioDes]

ah okay thanks tried that. its still busy. i will come back to you if i know anything more

 

[VioDes]

works now, but i lost all my data:/
is there any way of restoring it?

 

[Golfdriver97]

works now, but i lost all my data:/
is there any way of restoring it?

Most likely, no. Once something is deleted in Android, it's gone.

 

[VioDes]

well that does suck:/
but ty anyway