Frequent BSOD's (athr.sys) during normal usage.

Code:

Name    [00000007] Realtek RTL8139/810x Family Fast Ethernet NIC
Adapter Type    Ethernet 802.3
Product Type    Realtek RTL8139/810x Family Fast Ethernet NIC
Installed    Yes
Driver    c:\windows\system32\drivers\rtnicxp.sys (6.108.331.2008, 50.00 KB (51,200 bytes), 7/22/2008 6:42 AM)
=========================================================================================
Name    [00000009] Atheros AR5007 802.11b/g WiFi Adapter
Adapter Type    Ethernet 802.3
Product Type    Atheros AR5007 802.11b/g WiFi Adapter
Installed    Yes
Driver    c:\windows\system32\drivers\athr.sys (2.0.0.75, 1.05 MB (1,096,704 bytes), 10/9/2009 1:37 AM)

Code:

BIOS Version/Date    Hewlett-Packard F.31, 2/29/2008

The new drivers may not match with your device, search in HP's site, if you can have BIOS update there, it will update the chipset. And, search for specific model numbers, all are there in this post.

Either you need to update the drivers, or you need to replace the WiFi card.

At that situation, you need to update the BIOS, it will update the chipset drivers, including the network driver.