There was an electrical storm and my computer just stopped working (won't turn on at all). I saw a computer technician and they told me my motherboard is broken. I can't seem to find anywhere that I can buy a new motherboard (for a dell optiplex 330), or a motherboard that would be compatible with the rest of my of my components. (im in Ghana) Any suggestions?

Usually the power supply is the first victim in an electrical storm. Are you sure the motherboard is what is bad. If the motherboard is the bad component then as you may know, the version of Windows on your hard drive is keyed to the original motherboard. That means you would need to replace with the same motherboard. That can be expensive. In the future you should use a surge protector to protect against that type of damage. If you can borrow a power supply that is compatible I suggest trying that as a start. I'm not sure the technician that told you the motherboard was bad had any way to determine that for sure. Not turning on at all would indicate a bad power supply.

Did you actually take the PC to the "computer technician" & have him look at it? or did you simply talk to him about it & he guessed that the motherboard is bad? I would suspect the power supply as OtheHill suggested. But don't run out & buy one unless you're 100% sure. A good power supply is relatively expensive, probably 650,000 Cedi or more...lol :)