Hello, new guy here. My HP Pavilion dv9000 notebook has problems. First, when turning on the pc all lights and fan would come on, but nothing at all appears on the screen. After approx. 20-30 seconds these things shut off, then come back on. This cycle repeats a few times, then finally pc shuts off permanently. I called HP and we tried a few fix its, like removing and switching memory cards, w/no success. They then told me I need motherboard replaced. I asked about the Limited warranty Enhancement option for this pc but was told the time limit expired and no longer eligible. This all was about 3 weeks ago. Still, I would occasionally try starting the pc in the slim chance that by some miracle, it might start. Two days ago I turned it on (after removing the hard drive from port #1 and putting it in port #2) and I saw the HP Invent logo that appears at start up. I was thrilled. But then immediately the message in upper left corner says "Operating System not found"'. I emailed HP and we decided that I would try to do System Recovery w/3 disks I had made previously. First tested hard drive and all 3 tests passed. Then I tried the system recovery disks, which took a couple of hours. At the end the message was, "Recovery successful, restart pc"'. Did so, but with same result, Operating system not found. HP emailed me back and suggested I buy new recovery disks from them, for $15-20. Is this worth a try, or do you think the motherboard is indeed finished? Should I try recovery after putting HDD back in original port? Thanks any and every one!