Lewis Hamilton says he will "never give up" ater the Mercedes driver suffered further misfortune during qualifying for the Russian Grand Prix.
Hamilton's car suffered a power unit failure which denied him the opportunity to participate in Q3, a recurrence of the issue which kept him out of qualifying at the preceding round in China.
Hamilton currently sits 36 points adrift of team-mate Nico Rosberg, who will start from pole position, but the reigning World Champion has vowed to keep fighting.
"When it happened in Shanghai it was something we hadn't seen before and now unfortunately it's happened again, so we need to understand it," he said.
"I've never been superstitious about these things, though, and I never will be. There's nothing I can do about it, so I'll move on and look ahead to the race.
"I don't know where I'm going to start yet - we'll wait to see how that unfolds. But I never give up and I'll give it all I've got to recover whatever I can in the race, like always.
"It's not an easy track for overtaking. With the levels of tyre degradation and it being so tough to follow here, it's not going to be easy to make my way forward.
"But there are long straights and we've got good pace, so if I can keep the car in one piece I'll be fighting for decent points I'm sure."
Hamilton was also given a reprimand, his second of the season, after he ran wide at Turn 2 and did not re-join the circuit as requested by race direction.