Hi guys, I've searched Internet and didn't find the answer. I have Dell M5010. When I try to start it I've got a problem. There's a logo of Dell and then I need to enter system password. After 3 attempts Service Tag shows up and PPID. Is there anyway to unlock system? I've tried taking off battery but it didn't help. Service Tag: 9K0TDL1 PPID: CN0WTVYR70166069007WA00 Sorry for my english, I'm not very good, but I hope you'll understand and maybe you can help me. Thanks.