Well it started when I had when I had a BSOD on my computer and it said something about a system file being out of place or soemthing. I tried restarting it and it cannot go to the OS, I learned much later that I needed to repair my files but my cd rom drive doesn't work. I tried installing the hard drive on a another computer but it didn't workout to well so I tried reinstalling on my computer. I attempted it but not my computer cannot see the monitor as well as my hard drive. I cannot see my computer yet I know what to do now, I probably messed up some parts ont he inside or something and I may to take it apart to find out.

I need to rip my files before I send to the repair shop however I don't start work until tomorrow so I planning to hold off on it until then. I need to repair my computer but I need some help on that and posssibly save some money. What I can I do? What should I do?

Edit: My PC is an HP Vectra VL420F.