This is not really a good answer, since the same happens with expensive original chargers. Right now, it has heppened about the 6th time with the original, 140 dollars in Costa Rica one

when you said you installed another HDD was that a NEW one? Get a cheap NEW one. Install a basic system on the drive and see how it goes.

Please deactivate your icloud for a while. Does it still do it? It might want to go online and can't

How many Amps has your charger? on 110V my ipad mini also sometimes gets very hot. I have tried another charger, ironically the one for my Huawei phone has a lower Amperage and it gets less hot.

Take the lens of and shoot at a low speed such as 1s. Does the shutter open? do you get a white image? yes_ Try a different aperture and a lower speed with the lens on. no_ your shutter has a problem or the battery is low!

check whether there is a device with a stong magnetic field above the screen, such as a transformer or speaker.

Sorry, I don't know your car in particular. You mention master and slave cylinders, which tells me you have a manual box. So if you say it doesn't go past 40,, in which gear is that? in 1st this would be normal and not recommended, neither would it surprise me in 2nd in 5th gear it would certainly not be a good idea to try and accelerate at 40 km/h. So stuck in neutral means to me clutch for bent or slave cylinder and or master cylinder gone. The 'linkage would be a pipe,which is unlike to be damaged but then you never know. How is your fluid level? Have you lost a lot? if so , check where it is wet and change that one. If they are expensive for your car get a repair kit!

Locate the solenoid, see whether it works if connected to power. Usually at the back of household devices.

I don't know this specific car but it could be a radiator hose like on BMW or P38 Range Rover, another possibility is condensed water of the aircon if you have that. Last but not least, check if it is soapy, in that case it is a screen wash hose

I would suggest the same as Dan says. Hold the Shift-Control-Option on the left side of the keyboard for at least 10 seconds otherwise it doesn't work. If this doesn't help, check the symptoms for the MagSafe DC-In Board. Maybe that is your problem. Very important, you don't say which system you are running. When I installed Yosemite or El Capitan, it was going onto Icloud all the the time, wasting bandwidth and energy. My internet access is metered here in Costa Rica so I dumped the 'improved' systems and reinstalled 10.8.5. Result: more battery, less waste of internet and better performance altogether.