As for your disk drive, check to see if it does show up in the BIOS and/or the disk manager. If it is not recognized in the BIOS I would try to uninstall it and check the contacts and pins make sure they are all straight, no corrosion etc. If they check out, you may be looking for a new drive. If your laptop changes color when you move it, I would suspect a loose, broken cable or loose inverter connection. You may have to replace the cable, also cheaper than anything else to try. Hope this helps. The maintenance and service manual is available [http://h10032.www1.hp.com/ctg/Manual/c01311536.pdf|right here.]