Question [Q] Phone Not Found! Software Update [KDZ]

Hi. I'm trying to make my phone return to official LG 4.1 stock, but for some reason Software Update says that my phone was not found! I have installed the drivers using LGMobile Support Tool and I have properly enabled Windows Enable (it indicates On). Also, I disable the modem from device manager successfully. My phone goes to S/W Upgrade normally, but the software fails to identify my phone! Any ideas...?

EDIT: ok. It seems that the problem was solved by using a different computer. I guess there's something wrong with my USB ports or something...