Super User is a question and answer site for computer enthusiasts and power users. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I just bought a used custom-built computer locally. In the process of checking the hardware, I notice that the case fans have accumulated a lot of green "gunk" and I've tried wetting the edge of a paper towel to wipe and rub it off. Still, there is always some residue remaining. What's the best way to clean off this gunk?

Thanks in advance. No pictures, but I can take some if needed.

share|improve this question
Green?! That's a new one... – Ignacio Vazquez-Abrams Apr 17 '10 at 20:04
Yes... DARK green. I had to spend nearly 2 hours cleaning out the case and other components. – Wesley Apr 17 '10 at 20:11
up vote 4 down vote accepted

Rubbing alcohol is an excellent gunk remover, no matter what color.

share|improve this answer
Hmmmm... I never thought of that. I'll definitely give that a try. – Wesley Apr 17 '10 at 20:10
My dad suggested Vim first, and it worked for the most part. Used rubbing alcohol after and it's perfect! Thanks. – Wesley Apr 18 '10 at 21:21

I use cotton buds to clean the dust off them, it can get right into the corner.

share|improve this answer
What are earbud things? – Josh K Apr 17 '10 at 20:47
oops, I meant cotton buds – Jonathan. Apr 17 '10 at 20:54
like q-tips? they're kinda like earbuds... i mean, they both go in ears, right? – quack quixote Apr 17 '10 at 21:38
Oh, q-tips.... right. – Josh K Apr 17 '10 at 21:53
Good point, but adding some liquid "solution" will make it work even better. I ended up using Vim for the first stage and then some rubbing alcohol and it is squeaky clean! Except that I cracked a corner when screwing it back on. >.< – Wesley Apr 18 '10 at 21:20

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.