665347-001 for HP  DV6T-6C00 NOTEBOOK DV6T-6B00 NOTEBOOK Pavilion DV6 DV6-6000 Laptop Motherboard PGA989 DDR3 HM65 HD6490/1G original laptop motherboard 650799 001 for hp pavilion dv6 dv6 6000 motherboard hm65 hd6770 2g notebook pc system board tested