If you can boot to your discs, give all hard drives full tests for errors. I also doubt that your card was damaged in the process as you would not usually be able to display an image once a video card has received an electrical shock.
Your motherboard, seems to be doing alright but I would not rule it out completely if the computer is having issues. The motherboard is typically one of the most fragile pieces next to your CPU and is therefore usually one of the first items to go when fried by electricity.
I also doubt it is your PSU, as you seem to be able to start up the system perfectly fine and the PSU (just guessing) spools up correctly.
Test each part separately doing a "bench test" if need be, if the computer refuses to boot to windows. This way you can find if you have a faulty part in the mix causing problems.
Thats all I got for you as of now, feel free to respond if you need more help!