i8042prt is a keyboard or a mouse driver. Try deleting this driver and see if Windows operates normally and then reinstall your device (either keyboard or mouse) relating to this driver. Make a back-up first.
OR - it could be because you have an USB-connected keyboard but PS/2 keyboard support is still enabled in BIOS.
For "The driver nv4_disp for the display device \Device\Video0 got stuck in an infinite loop.:"
A problem with you nvidia driver,-driver could be corrupt.. Uninstall the graphics device, reboot into vga mode, taking care to cancel any found new graphics device. Then uninstall/delete all nvidia drivers, then download and install the drivers direct from nvidia site. Get the latest version of the ForceWare drivers .
http://www.nvidia.com/content/drivers/drivers.asp Do not use winupdate for drivers.
The above is just addition to the reply from Aytrix-Tec.
In the future, please follow the direction for the copy and paste. Information in that helps in the troubleshooting.
My guess is that the full Event Error looks like this:
Event ID: 7026
Source: Service Control Manager
Description: EVENT_BOOT_SYSTEM_DRIVERS_FAILED The following boot-start or system-start driver(s) failed to load: i8042prt
This is for example only- yours may be different.