Venture Capital Investors Crowdfunding Startups
Based on your comment to Nishank's answer, If all you need is two customers to satisfy your capital needs you need to focus on getting paid customers rather than trying the VC or crowdfunding route. Even if you decide to get VC funding later, having paying engaged customers makes the process easier.
I believe that Ash Maurya's book running lean had a great answer to this question. He also addresses this in post entitled the 10x product launch.
The entire article is worth reading, but here is the core bullet points:
Stage 1: Use interviews to recruit 10 early adopter customers
Stage 2: Use email list to find next 100 customers
Stage 3: Use marketing website to acquire next 1,000 customers
Stage 4: Build your engine of growth for next 10,000 customers
I would suggest two things:
The biggest risk for any investor is if people have the problem that you are trying to solve. And the best way you can put that concern to rest is by having paid customers.
And you're right that crowd-funding platforms like Kickstarter won't have the audience you are looking to raise money from. For that, there's AngelList.