Advise you to unplug all the RAMs, then plug them one by one again. Afraid you didn't plug them in correctly or there is faulty RAM. If possible, plug each RAM and then start the computer, see your wireless card is working. Also you can go to BIOS to see any problem there.

Also go to your device manager, check this wireless card driver status and ensure it's working well.  If not,  you might need to re-install  the driver.  But  I think your problem is most like due to those RAMs.

Good luck..

[A]
picoHat
Home Network, Wireless Network and Computer Networking Made Easy