665284-001 for HP PAVILION DV6Z-6B00 DV6Z-6C00 NOTEBOOK DV6-6000 laptop motherboard A70M HD6750/1G 665281-001 DDR3 682040 001 48 4st06 021 laptop motherboard fit for for hp pavilion dv7 dv7 7000 notebook pc gt650m 2gb