Cleaned my PC with a vacuum cleaner and now it won't start up anymore. No hardware changes in months. I tried most of the suggestions from NO POST Tutorial, but conventional logic doesn't work for me so i need some help understanding the results: -with everything i had before the cleaning, unchanged for months and which worked fine across multiple cleanings, there's no POST, startup or whatever. -removed a pair of dual-channel RAM memory and now it works fine. You might think they were damaged in the cleaning and so might i, but i didn't touch them, only used the vacuum to blow away the dust. From what i saw on a closer inspection, there are no scratches, burns, missing parts or cracks, so i don't really understand why they won't work anymore. I mean the mb recognizes them in their slots else it wouldn't beep when i remove them. Are they really that sensitive that they would break simply from blowing the dust off them a few times?