Windows Vista Windows Explorer has stopped

Running Windows Vista Home Premium SP1, when my notebook starts up or reboot, the "Windows Explorer has stopped" window and "Windows Explorer is restarting..." pop up.

Then all the desktop icons go to the 2nd display, instead of on the notebook's LCD display.

I turned on the bootup log after pressing F8 on bootup, and found that 987 lines start with "Loaded driver ", and 20688 lines start with "Did not load driver ".

Many of the "Did not load driver" lines are repeating. Examples are:
---------------------
Did not load driver @nettun.inf,%6to4mp.displayname%;Microsoft 6to4 Adapter
Did not load driver @nettun.inf,%isatap.displayname%;Microsoft ISATAP Adapter
Did not load driver @nettun.inf,%tunmp.displayname%;Microsoft Tun Miniport Adapter
Did not load driver @hal.inf,%acpiapic.devicedesc%;ACPI x86-based PC
Did not load driver @netrasa.inf,%mp-l2tp-dispname%;WAN Miniport (L2TP)
Did not load driver @netrasa.inf,%mp-ip-dispname%;WAN Miniport (IP)
Did not load driver @netrasa.inf,%mp-ipv6-dispname%;WAN Miniport (IPv6)
Did not load driver @netrasa.inf,%mp-pppoe-dispname%;WAN Miniport (PPPOE)
Did not load driver @netrasa.inf,%mp-pptp-dispname%;WAN Miniport (PPTP)
Did not load driver pcouffin device for 32 bits systems
Did not load driver @nettun.inf,%6to4mp.displayname%;Microsoft 6to4 Adapter
----------------------