Specially the graphics card cables.
By the way, here we use compressed air.
Hope this helps.
Grif
I recently decided to clean my computer from dust on the inside. I stupidly used a handheld vacuum to get some of the dust out. When i turned it back on, my monitor was not showing anything. It recognized that there was a device connected to the hdmi but it didnt display the computer. Any idea on the problem and how to fix it?

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