Product: HP dv9000 laptop running Windows Vista Home Premium After 6 months of being in storage, I plug it in and fire it up. I get the "Operating System Not Found" message. I tried booting into safe mode, didn't work. I booted from a Linux-based drive wiping disc, and that worked, but the HD was not found. So I removed and reinstalled the HD. Now it begins to fire up Vista, but when the desktop is supposed to appear, it instead gives me a black screen with a cursor. The touchpad moves the cursor, but nothing else happens. Any ideas?