system
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Same issue here. Brand new HP EliteBook 2760p.
Has HP Protect tools and other security features, disabling the HP and security feature services in boot, will sort of work, though very cumbersome, and not a good fix. You have to attempt to log in, switch user, wait 3 minutes… click your user, wait 3 minutes for hp protecttools to try and load… then log in.
Windows 7 64bit.
I have Avast professional edition. Contacting support about the issue right now.