My deck top computer drops the connection

i have a dir 655 router, nd have 2 wireless computers that run off it, my macbook pro works fine and doesnt drop the connection, i have a desktop computer that has the dwa 130 usb adaptor nd it drops the connection every 10minutes, ive been on the phone with d link tec support for like 30 hours nd still have the same problem i bought a new router thinking that was the problem but i guesss not..... i think it is the adaptor. looking for some help nd looking for a new adaptor that will hold the connection...

clean up your computer (re-install drivers) and check the latest firmware available for your router.... if you still have problems then there might be some issues with the PC itself..