I just installed Ubuntu 12.04 on 3 HP Probook 4540s's, and none of them seems to be able to connect to wireless networks.

I have 1 Probook 4540s with Windows 7 installed and I can access wlan from it. I tried installing the necessary drivers from HP's website, but it still doesn't seem to be working.

I've seen other people with different Probooks having similar problems, but their computers seem to be able to detect and even attempt to connect wlans, while mine doesn't even acknowledge that it has wireless. Any help would be appreciated.

lspci:

00:00.0 Host bridge: Intel Corporation Ivy Bridge DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Ivy Bridge PCI Express Root Port (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller     (rev 09)
00:14.0 USB controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4)
00:1c.2 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 4 (rev c4)
00:1c.5 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 6 (rev c4)
00:1d.0 USB controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA Controller [AHCI mode] (rev 04)
01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Thames [Radeon 7500M/7600M Series]
03:00.0 System peripheral: JMicron Technology Corp. SD/MMC Host Controller (rev 30)
03:00.2 SD Host controller: JMicron Technology Corp. Standard SD Host Controller (rev 30)
03:00.3 System peripheral: JMicron Technology Corp. MS Host Controller (rev 30)
04:00.0 Network controller: Ralink corp. Device 3290
04:00.1 Bluetooth: Ralink corp. Device 3298
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 07)