I had printed out the list and followed it. The order of driver installation was:
1 Dell System Software
2.Chipset
3 Audio
4 Video
5 Network (ethernet)
6 Quickset
7 Network (wireless)
8 Bluetooth
9 Wireless WLAN
10 Dialup modem
11 DVDRW
Would you suggest uninstalling/reinstalling drivers? Which one(s)?