Hi, It first started with explorer.exe crashing constantly... Everytime I would click start, it would crash etc... Then the first BSOD hit. It was a kernal something error and said a7 as a code. After the first BSOD, chkdsk ran and it fixed a whole bunch of errors. Then BSOD hit twice again with the same errors. I ran chkdsk a few times and it did not find errors. So then it BSOD's stopped and it continues to freeze. I've deactivated all non microsoft dll's using shellextview. I've ran registry check and scanned for viruses. This ultrabook is 3 weeks old and had Mcafee from the beginning. So I found a thread on running windows recovery mode. It wouldn't run because now Windows Installer spits out an 1016 An I/O operation initiated by the registry failed unrecoverably error when I try to run it. I can't find a fix for that. I've created a new profile, still freezes. I don't know what to do anymore. It started when I launche google chrome. I've uninstalled it. I've restored to an early restore point. No luck. My specs: Spec Showdown: Acer Aspire S3-951 Ultrabook vs. 13.3-inch MacBook Air | PCWorld Any help would be appreciated.