No residue at all, completely cleans contacts
I have a PC that just would not boot. I have 20 years experience integrating PC systems. Nothing worked. I even pulled the processor, straightened a pin, but no go. Then I got WD40 contact cleaner. I pulled all the connectors, memory dimms, adapter boards, and sprayed everything with WD40 Contact Cleaner.<br /><br />It dries very quickly. I connected everything back up, and poof, the system booted up, and it's been working ever since (6 months). Talk about getting me out of a jam. I was ready to replace the mobo! But for a few dollars and an hour's time I was saved a $200-$300 expense.<br /><br />And I hardly used any. The can still feels full! I seriously could not believe it. And I shall never forget.<br /><br />Five thumbs up.
Rating: 5 stars