Use rubbing alcohol and a toothbrush to clean. Do a vigorous cleaning and then allow to dry. You can use canned air to help, but it MUST BE DRY. Place by or on near a warm window should help along. You can use electrical cleaner found in most home improvement centers, spray and use the toothbrush, then wipe down as best as possible, then use alcohol to finish the job. Don't use any common household cleaner or any solvents, you may cause damage and/or seal it's fate. good luck
I know that as far as dust goes,it's best to use some sort of air blower.
But what about something more tricky,such as something sticky?
Here's the story.
My old computer's GPU started to act up,and i refused to waste money on a new one,so got in touch with my mate,and he had a barely used asus en8800gt top series,so i took it,without inspecting it,i just installed it,and for about half a day/day it worked just fine,until it froze my whole PC,i figured it must of overheated,so i installed furmark to watch temps,barely 59c in and it froze my whole pc yet again,this time when i restarted my res was changed to 1024x768 (or whatever was the proper number of low res) i reinstalled drivers,reseated the gpu,and nothing,i figured that maybe ive killed the thing,so i stuck my old gpu back,even tho it glitched,at least it somewhat worked,until all of a sudden that one froze in middle of youtube video as well,at witch point i started to look at pcie slot,and just by accident at the gt8800.
Not quite sure how,the gt8800 had some sort of sticky goo on half of the golden contacts,so my guess is that it must of transferred some of it into the slot as well,which is why my old card started to act up in the same exact way.
So my question is,what can i use to clean the slot,and the gpu contacts without too much risk of damaging them.