Difficulty powering up, won't boot

Hello,
So here is my long story....laptop hp pavillion dv600 was attached to power adapter during a thunderstorm. Two days later I used my laptop to access my tax program and it worked fine. When I tried to connect to the internet, my laptop could not find a wireless network, so I rest the modem and still no connection. Restarted again and found a connection. Then I decided to download a program from Cnet that allows you to copy dvds to your computer. During the donload process it asks to restart windows. I answered yes and went on doing other things. When I returned, windows had not restarted and I could not power up my laptop. I have tried all the tricks, even removing the ram cards and reseating them. The only way I can power up is to press the power key and control alt delete at the same time. It sounds as if it is going to start, the fan runs, all lights are lit blue, except the wireless light which is orange. I have not tried to hook it up to another monitor (afraid to ruin something). Left it on last night and it still has a solid black screen. Don't know if something got fried during the storm or if there is a virus problem from the download, although I have Mcafee protection. If I close the lid completely, the power stays on. i thought it used to shut off, but I may be wrong about that. Thinking I may have a bad motherboard. Tried to test it by ppowering it up without the memory cards. Another website said that if the computer made a continuous beeping sound when doing this, that the motherboard was good. My laptop was silent!!!! Probably an indicator that the motherboard is bad, if I did that right. The series of events is what puzzles me and I am not ready to resign myself to the fact that I have a bad motherboard. Any thoughts would be appreciated. Any other ideas on how to determine if I have a bad board? Does anyone think a boot program would work. What about restore cd's?