Managed to do it even without breaking anything. That's a big success. Now it just needs some sanding. The cheapest solid-state drive would nearly double the cost of my computer. That's why I was planning to use a CompactFlash card, but as mentioned above, the motherboard refused to correctly recognize it. Only 60% of the budget is spent as the current cost of "Filmiarvuti" is approximately 600 Estonian kroons. That's about £35 and I'm pretty sure no additional parts will be needed. By the way, the name of this build means "Movie computer" in Estonian. Quite original, I know.