For server 2k/xp activation prompt @login

Boot device into safe mode (f8) while loading
run = rundll32.exe syssetup,SetupOobeBnk wait 30 seconds and reboot normally.
(This will give you 30 days to reactivate windows)

Once logged in complete the following

1.Open your regedit RUN > REGEDIT

2.Find key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows

NT\CurrentVersion\WPAEvents

3.see the string OOBETimer

4.Double click.change all content with this one FF D5 71 D6 8B 6A 8D 6F D5 33 93 FD

5.Right Click on WPAEvents(Regedit)and choose Permissions

6.Window will show up,click to System and check all of Deny Listbox

7.Restart Your PC

Check activation status by clicking run and typing oobe/msoobe /a