Компьютер включается, но нет изображения на мониторе, кулеры работают, не работает спикер(пищит)

Ремонтируем одну из возможных неисправностей ПК. Компьютер включается, все кулеры крутятся, светодиоды и индикаторы светятся,не работает спикер и отсутствует изображение на мониторе. ************************************************************************************************************************************ Repairing one possible computer failures. The computer is turned on, all the coolers cool, light-emitting diodes and LEDs are lit, the speaker is not working and there is no image on the monitor. The problem turned out to be spoiled in the slot of RAM, but not the fact) If you have a speaker beeps, vnematelno need to listen to what he says and find rozshifrovku online. If it does not work, then you are at) as it is desirable to pay attention to how to run your video card. If you run it cooler works at the maximum, it makes a lot of noise and within 30 sikundu does not reduce the speed, so watch the video in full, in all its detail. And so obovsem order. The problem manifested itself in the past as soon as stretched video karta.Podozreniya fell on the motherboard, there were suspicions that it may be a micro-crack due to which the PC is working with zboem. And so, to begin with, our check power supply. - We get it from the system unit, disassemble, clean, look if there is swollen cans, if there is clearly a problem in that, if all goes well set back. Connect the power of the motherboard, We take a voltmeter and measure the output voltage of the power supply...