Re applied thermal paste, now pc wont boot up and makes high pitch

So I wiped my cpu with cleaning alcohol, dried, wiped it with a very thin layer of thermal paste(silver one), then put everything back together, not the fan wont even spin, but it twitches, and when power runs through pc, I hear a very high pitch noise. What is wrong? Please help.

Well we can't hear or see your computer so this will be my guess; the cooling fan on the CPU cooler. Check to make sure it's plugged in properly and that it spins freely with nothing hitting it.Check all other fans the same.

Yes its plugged in and spins with my finger. What else could it be?