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Most likely the noise is made by the power supply or a failing hard drive.
Two components in a PC that might make a whining sound are power supply and disk drive. Noise from a power supply usually means it is time to replace the power supply, however, it might just mean that the fan is dirty and the dust needs to be blown out with some compressed air. If your hard drive is making any unusual noises it is time to make an immediate backup of your data and replace the drive.
A whining noise present when turning the steering wheel indicates a faulty power steering pump. As the pump fails, it allows air to enter the system and a distinct whine.
Most likely the power supply or a failing hard drive.
Friction in the transmission system may cause whining noise when a car is accelerating. A poor engine or clutch assembly may cause the excess friction in the transmission system.
Whining noise near belts had pulleys adjusted any idea what is causing this
It may be the Idler pulley. I used to have a 96 Breeze with a 2.0L 4cyl that made a whining noise. I thought something might be seriously wrong, but then i discovered it was just the Idler pulley making noise. I changed it-- no more noise.
A whining noise in the transmission is usually an indication the transmission fluid is low. Check the transmission fluid and fill it to the recommended level.
Check the power steering fluid level. It might just be low or there is a leak.
Previas have a history of a whining noise coming from the catalytic converter. There is a bracket inside the converter that when loose or has came apart creates the whining noise during acceleration. It especially is very pronouced during high speeds in the freeway. You might be in for an expensive cat converter replacement.
It is the alternator....
You might need to flush your power steering fluid system. What causes this whining or sizzling noise is the hydraulic bar getting stuck which a driver doesn't feels in its rack. or if your car recently visited a ditch or hot a side walk really hard, these factors can effect your steering rack and steering Coulomb.