Hello, How are You today? I have been trying for about 4 days to recover My system OS , so I can fix My daughters laptop. I tried to upgrade it from Win-Vista to Win 7. I thought I had My recovery disc before I switched. Unfortunately, I was mistaken. I cannot find the disc. And it seems impossible to get one from Acer. The upgrade went flawless actually. But a couple of hours after the upgrade the system crashed. And I have been losing My mind every since. What can I do? My system is saying, "<Windows root>\system32\hal.dll. is missing. Please help.