I received a blue screen of death of this following:
Technical information:
STOP: 0x000000D1 (0xFF6D401C, 0x00000002, 0x00000000, 0xAA246A80)
My computer restarts automatically sometimes.
Help me please.

When you get the BSOD could you copy the top line. It normally has an indication as to which file or driver caused the stop in the first place.

Next time it does it, note it down and post back with the results.

Regards,