My HP ze2315us laptop (running XP) will not connect to internet wirelessly or with ethernet after the ac power connector was replaced. I've gone through the entire troubleshooting process with HP techies to no avail. I used the recovery disk to start over. I replaced the hard drive because it failed the self-test. Used the recovery disk again. The wireless assistant does nothing at all. The radio button does nothing. I've pulled and reinstalled the wireless card several times. I've installed every driver that has anythign to do with the wlan and I've flashed the bios. The Texas Instruments PCI xx21 cardbus driver is showing a problem and I've installed and re-installed the drivers to no avail. I haven't replaced the wireless card. Help.