Keyboard,mouse,monitor not working and no beeping sounds after i cleaned my pc

i just clean my pc a while ago 'coz it's fan is going loud so i thought to clean the fan and so the mobo and ram and then when i turned it back the monitor doesn't display any, the keyboard and mouse has no lights making and no beeping before it turned on though the CPU is running....

i triple check the plugs and cards but no luck... i just use a cloth to wipe dust...

what would be the problem to this?
anyone help!!!!!!!!
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More about keyboard mouse monitor working beeping sounds cleaned
  1. I think you made the mistake of using cloth to wipe exposed circuit boards. Using cloth could discharge static to the board and kill it. Even worse if the cloth was damp or wet.
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