Windows 7 Wireless signal loss if distance increases

[transcendx]

Hi,
I have new Acer Aspire 5739G laptop and fresh Windows 7 on it.
The wireless card is Intel WiFi Link 5100.
The problem is that wireless works only in short distance with access point - max distance is about 5 meters.
In that distance everything works fine.
But if I go farther or to another room it disconnects.
With other laptops all works fine even on very large distance.

I tried such things (nothing helped):
* uninstall, reinstall or update drivers
* install newest drivers from Acer site
* install newest drivers from Intel site
* tested with xp & vista drivers
* on network connection properties unchecked all things except tcp/ip v4 protocol (microsoft networking,sharing, link layer topology,QoS, TCP/IP v6 ..)
* disabled homegroup
* on adapter properties changed signal frequencies (1,6,11),
* on adapter properties changed standard type to work with: 802.11 b or g
* on adapter properties changed signal to MAX, don't use power saving
* disabled internet security, firewall
* Changed access point signal broadcasting with no encryption or wpa
* it disconects from another access point the same way (problem with system not wifi AP)

Maybe something forgot to say, but there was few hours of testing and can't fix it

Waiting for Your advice

 

[Toptech]

At this point it sounds like it is worth putting a different WLAN card into the notebook.