The day before yesterday I got a Zotac GTX 650 Ti Boost, since my previous card was a Sapphire HD 7850 I uninstalled the AMD Catalyst drivers completely and then installed the latest Nvidia GeForce driver (320.49 WHQL), everything's fine but two things are different, one, the boot screen is windowed which isn't a problem and two, when I sign off a user account (I'm using Windows 8 Pro 64bit) to turn off the computer there is a slight delay (about 10-15s) 'till the lock screen shows up and in the very last moments that it's appearing in a sudden flash Windows 8's default lock screen background comes up and then it turns into my background. Same thing happens when I turn on the PC, except for the default background thing, however nothing like that happens when I lock the system (the lcokscreen comes up fast and fine). My guess is that Windows still tries to load AMD's drivers (or something like that) at startup, what do you think?
The rest of my rig:
Mainboard: Gigabyte GA-970A-UD3
CPU: AMD FX-6100 Black Edition
CPU Cooler: Cooler Master Hyper 212 EVO
RAM: Corsair XMS3 4GB DDR3 1600
IHDD: Western Digital Green 2TB
EHDD: Seagate Expansion External Drive 2TB
PSU: Cooler Master GX550
Case: Cooler Master K380
ODD: Lite-On iHAS122
Monitor: AOC E2243FW2K
The rest of my rig:
Mainboard: Gigabyte GA-970A-UD3
CPU: AMD FX-6100 Black Edition
CPU Cooler: Cooler Master Hyper 212 EVO
RAM: Corsair XMS3 4GB DDR3 1600
IHDD: Western Digital Green 2TB
EHDD: Seagate Expansion External Drive 2TB
PSU: Cooler Master GX550
Case: Cooler Master K380
ODD: Lite-On iHAS122
Monitor: AOC E2243FW2K