Today i decided to clean my pc and so i started by turning it off and blowing out some air , than i removed my cpu fan and cleaned it. And than i removed my gpu and cleaned it too and at last i took off my 4 ram cards and cleaned them too i put all the thing back to their place and tried to turn the pc on but it only worked for like half a second and turned off, i dont know whats wrong please someone help me ... :/