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Lewis Hamilton was left frustrated and bemused by technical problems that severely comprised his race at the Grand Prix of Europe.
Tenth on the grid after making contact with a barrier in qualifying, Hamilton climbed to fifth place on Sunday, before the issues with his Mercedes car prevented further progress.
With teammate and rival Nico Rosberg dominant at the front of the field, the Englishman asked for assistance from the pits to choose settings that would have reinvigorated his pace.
However, current rules ensured that Mercedes were unable to help Hamilton over the radio, who drops 24 points behind Rosberg in the fight for the 2016 World Championship title.
"I'm not sure what it was but, with eight laps to go, it fixed itself," said Hamilton prior to Mercedes confirming that the car was suffering from reduced electrical deployment.
"As far as I'm aware, I was not on the wrong setting, as I hadn't changed anything.
"I was looking at my dash, trying to figure out what I'd done wrong, but they were all in the wrong place. It felt like driving without the ERS pack - I had no boost nor KERS for pretty much the whole race.
"I could have spent a lot of the race looking at the wheel and the switches but there are, like, 20 positions on them, and I don't know which one it is that isn't set right, so there's nothing that I can do.
"But it is what it is, fifth place, and I will try and come back in the next race."
Hamilton concluded: "I've definitely had better seasons but there's still a long way to go. I will give it everything that I can to keep battling and hope there are less and less mistakes going forwards.”
Rosberg dominated from pole position at the Baku City Circuit to secure his first win since triumphing in the Russian Grand Prix at the beginning of May.
"It's been an amazing day, an amazing weekend," the German said during the podium celebrations.
"It's been spectacular here. It's a great track, (with) really exciting racing.
"The weekend went perfectly. Qualifying, the race ... everything went to plan - (it’s) really awesome."
Despite Hamilton only finishing in fifth place, Rosberg refused to acknowledge that he was thinking about the championship fight.
"To be honest, I'm just enjoying this win,” he said. “I wanted to win in Baku, and it worked out. I'm ecstatic.”