Hey satan_indeed -- welcome to G2G

This may sound like a stupid question, but have you restarted your laptop since you began experiencing this issue? If a wireless network is added to the Blocked List, for whatever reason, then it will no longer be displayed in the available wireless networks list. Restarting your machine (or the WZC service) would clear the Blocked List.
Either way, if your adapter is picking up other networks, I highly doubt you need a new one. Please try the following steps.
Step 1 - Remove your wireless profile: - Click Start, select Run, type ncpa.cpl and press OK
- In the new window, right-click on your Wireless Network Connection and select Properties.
- Select the Wireless Networks tab.
- Click on your network's SSID and then press the Remove button.
Step 2 - Re-install your network adapter:Please do the following --
*Note: You may need your Network adapter drivers CD in order to complete these steps.- Click Start, select Run, type devmgmt.msc and press OK
- In the Device Manager, expand Network adapters
- Under Network adapters, right-click your network adapter and select Uninstall.
- Restart your computer; upon reboot, Windows will detect New Hardware and ask you to install your network adapter; please proceed to do so.
Try to scan for networks and then connect (you will need to re-enter the encryption passphrase). Can you connect?
Thanks,
- Dan