I just installed it and didn't see any changes, so I restarted my PC and it showed BSOD so after dumping I restarted again and worked perfectly but too slow the startup, some of my metro applications didn't launch and scrolling became sluggish.

So I just uninstalled and restarted, and it showed Drive C: repairing analysis process. Sadly it still is slow the start screen at first start. 

I don't know what changes did it do to my system, is there any tool to restore any changes you did, maybe for my windows registry o system files that have been affected.

I really like this software but as it says it is beta and I faced this trouble.

BTW: Still can't run email, calendar and contacts app, they appear with a little circle showing an X like a close button and can't run.

Gee, I can't restore these applications