Internet is very slow on HP EliteBook when I am on wifi at home and it disconnects me after a few minutes than it comes back. Signal is excellent, even if I am sitting next to the wifi router it doesn´t help. It works fine though with LAN cable. I use 2 other devices too through wifi at home and they are working perfectly fine. My laptop has Win7 Enterprise. It also works fine on other wifi networks. Any ideas? Thanks in advance!