Driver Downloads caused issues, help?

2 Days ago I downloaded drivers; Dell Wireless WLAN 1501 Half Mini-Card, Dell Wireless 365 Bluetooth driver, Dell Wireless 365 Bluetooth Module application, and AMD ATI Mobility Radeon 550V Graphics driver. Then after it rebooted, I had lost use of a number of programs and functions (Office no longer loaded, internet didn't want to connect, Dell re-install software gone, etc.)

So, I went to restore, and when I did I got the message "An unspecified error occurred during restore, 0xc0000022", I've tried to locate this code without any luck. I now realize that they probably didn't install in the correct order, but don't understand what happened.

Any help/suggestions would be GREATLY appreciated.