5o5,   There is not a Notebook System Utility for this model. Start with the chipset drivers and follow the list.How to Download and Install Drivers in the Correct Order   How To Restore or Reinstall Microsoft® Windows® on a Dell™ Computer   or Restoring Your Computer´s Software to the Factory Settings     Rick      
Hi, I just got dell inspirion n5520. After clean OS install (win7 64bit), my wireless has random crashes. Sometimes it can last for hours, sometimes it crashes 5 times in 2 mins. When I was installing drivers I'm pretty sure i didn't follow correct order. I have read several topics, and now I'm prepared to do a clean OS installation one more time, and install drivers in correct order.  These are my questions: 1. I was using this page as reference to driver installation order : [URL]     Notebook System Software  seems to be quite important, but when i typed my service tag it didn't appear in the list of drivers for my laptop (I can provide screenshot if necessary).  2. On my list there are "duplicate" drivers, A00 and A01, I'm not sure which one should I install, or maybe both. My plan was to do a fresh OS install, and then install drivers in this order: 1. chipset drivers: ( there are 4 of them listed under chipset ) INTEL Intel USB3.0; INTEL Intel Panther Point HM77 Chipset; INTEL Intel Management Engine Interface; REALTEK SEMICONDUCTOR CORP Realtek RTS5179 Card Reader;   2. intel storage 3. audio /video 4. network (under network are 4 drivers) one is for Ethernet, 3 are for wireless ATHEROS COMMUNICATIONS Dell Wireless 1x1 WLAN 802.11b/g/n (2.4GHz), Bluetooth v4.0+HS; and two are Dell Dell Wireless 1x1 WLAN 802.11b/g/n (2.4GHz), Bluetooth v4.0+HS  with only difference in A00 and A01. What should I install, please help.  system info: 
Wireless problem on inspiron n5520