According to this your Pegatron Jasmine has integrated video so you should be getting video. You have already tried new memory so I don't see how two sets of memory can both be bad. However, try to get your hands on another computer that will run your memory, swap them in one stick at a time and run memtest 86+ tester on the memory. If they check out good then the board is bad. Just FYI....I have worked on old computers for years, and the two types of boards that are junk are Foxconn and Pegatron. These companies are jobbers who specialize in low-cost, mass-production mainboards for commercial manufacturers such as HP, Dell and others. I have units come in with these failed boards regularly. You also can try swapping out your monitor just to rule out that the monitor just happened to fail at the same time you downloaded your update.
If you can get your hands on another power supply, you can try swapping that just for testing, but I don't think that is the problem. Since you are not connecting the hard drive it can't be OS corruption causing this particular problem although I would not rule a buggy download out yet. First you have to get the video working to continue testing (as I am sure you understand already). After you have ruled out all these options then contact the retailer with the results. The only thing left is the mobo.