I had to format my HD and used my windows 7 upgrade disc (which I had purchased for my other pc) and installed it and all was well when I went to use my activation code and it wouldn't work. I called MS and they messed around with it and updated it when it locked up. I called them back and they said I had to buy a new copy of 7 and I disagreed. ISSUE IS: I tried all the youtube videos to go into cmd and delete slui after making changes and all looked good then in device mgr it said I had 3 days left so I thought I was screwed then today (3 days) it rolled over to 27 days left to activation. Is this going to keep rolling over and my problems are over or do I still need to cry to MS and try to get an activation code. I still have the slui file in the recycle bin so I can restore it when I need to use a code. 

My Computer
At a glance
windows 7 64 bit1 gig
- Computer type
- PC/Desktop
- Computer Manufacturer/Model Number
- Dell
- OS
- windows 7 64 bit
- Memory
- 1 gig
- Hard Drives
- 160gb western
- Antivirus
- avg
- Browser
- IE 8