|I have tried vacuuming the entire system out.|
You probably omitted a static charge and fried your motherboard....you NEVER use the vacuum inside a PC, you have to use COMPRESSED air to blow the stuff out.
Also, you should have depressed the button on the tower for up to a minute and it would have shut off safely. Unplugging the power supply will also give an unwanted jolt to the motherboard.
Your power save light can still be on, even if the motherboard is fried.
Oh well a lesson learned for you ;-)
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