✔ 最佳答案
When you power up your system (PC or Notebook) for lenovo you can press the "Thinkadvantage" Key to go into factory restore option whick will guide you to clean up your PC.
If you are Desktop machine just give them a call and report you can't run factory restore then you can arrange an engineer to come to fix your problem on next day.
If notebook you need to carry it to service center and let them fix it for your.
Hope the information Help!
Cheers!