Here are some places where you can find a co-founder (technical or not).
Do you have a profile there? Do you have tech people in your network? If yes you can take a look at their profile and see if you find someone interesting and contact them.
If you don't have some of those people in your network then you will have to find them and most probably pay Linkedin to let you contact those.
You will need to apply there either through partners.
Using this site, somebody from my city found me. We've met, discussed and now became friends and maybe in the future we will start something (he needed someone who is more involved with the social media and online marketing - he is pretty technical himself)
Over 20,000 co-founder candidates And growing. Like match.com for finding a co-founder.
This is a new social network focused on real time conversations and professional recommendations. So, you may go there and look around and ask recommendations for a tech co-founder. This is still in closed beta so you will need an invite.