Unfortunately, the process android.process.acore has stopped.

[AC Question]

I am getting the above error popup about every half a second.

The problem is, i can't even get my phone unlocked because the error interrupts putting in my pin, and erases whatever i'd typed when it pops up.

Is there any way to fix this myself(like from an external computer connection) or am i going to have to take it somewhere?

 

[Rukbat]

First try - restart the phone. Hold the power button in until it restarts.

Second try if the first one doesn't work - if it's a phone with a removable battery, take the battery out. Hold the power button in for a few seconds. (This fully discharges everything and gives the hardware a hardware restart.) Replace the battery and turn the phone on.

Third try (assuming it's running stock and you don't want to flash a ROM, etc.) - take it to the carrier's repair place or wherever you bought it.