I run a HP Pavillion Desktop with windows 7. I have problem where I cant intall new devices, ie a mouse, MP3 player or an external hard drive. All existing devices work ok, ie mice, MP3 players and external hard drives. I get a message device driver not successfully installed. However if I start up in Diagnostic or safe mode the new hardware works perfectly, ie Drivers have loaded OK. I have updated all the drivers from the HP website and the problem still exists.
Can anyone help.