This has been covered multiple times on this forum.
- Make sure the trial length is correct in LimeLM.
- Re-download the TurboActivate.dat and replace them in your Windows builds.
- Make sure the timezone on the machine is correct.
- Make sure the time on the machine is correct.
- Make sure the date is correct (day, month, year).
- If you're using TuboActivate.exe realize that the first time that you run it, it actually starts the trial.
- Realize that if TurboActivate detects any date/time fraud it sets the trial days remaining to 0. Use a trial extension to add more trial days.