I bought a broken dv7 on craigslist for 20 dollars it wouldn't turn on and had some issues I fixed all those and now it starts up. I didn't get the hard drive so I installed a Toshiba netbook HDD in it and tried installing windows 7 back on the laptop during this process the HDD got unplug and it shut off now it wont load past the HP screen and I can hit the button to get into Bios and it freezes. I still can restart using ctrl, alt and delete. I'm pretty sure I have to re-flash bios but can't figure out how to. I've tried resetting by pulling the CMOS battery but nothing can get me past this. I was planning on parting it out but now that it was working I would rather just fix it and give it to my nephew to play Minecraft on. Any help is appreciated.