Have a HP Pavillion Entertainment PC - worked flawlessly for 11 months. After a Microsoft update three days ago, kept getting an error, windows in not loading, windows is restarting in a loop none stop. Called Comet helpline as it was in warranty - charged for tech support. I had to wait 24 hrs to talk to anyone - as they are apparently snowed under by people with the same issue. HP+Vista+Microsoft Update - same problem as me. I have AVG Pro, anti malware prog etc - scanned no viruses, My pc is looked after, afways updated and... read full review »