Getting SERIAL NUMBER NOT FOUND ERROR

[Daksha90]

I have HP Mini 1151NR laptop. It was having a bit virus issue so I formatted it and reinstalled Windows XP. The system was proper and there were no issue while installing. But when I went ahead with activation I am getting a error message that serial is not found. I get "No serial number found" message on every boot. I had also tried to run latest updates but that also did not worked. Can anyone help me to fix this issue.

[Ebadaah28]

Just check your system documents. Many of this system have serial key printed on their backside. If you had run a recovery then you won't get this error. But if you had installed windows xp from any other disc then you will get this problem. It is better you should go with the regular recovery process. You must avoid installation of XP from any different CD. Your serial remains un-identified due to that.

[HiSpeed]

Check the key properly. You might typing a wrong one. You can also contact Microsoft if you had lost the key. You can directly approach hp for that. Give them the model you had bought with bill and other required proof. They might help you back to re-activate your product. I think you are just not typing the key properly due to which you are facing problem.