Ok. So i bought a laptop that was about 5 months old from my brother. Its a Windows Vista XP i believe…but the internet that was automatically on it in the first place wouldnt work because he got a virus and lost everything. So i took it to a computer store and they said it looked fine but i needed a new motherboard or an internet card. i went with the internet card and installed it and everything and when i try to get on the internet it doesnt work. But yesterday out of curiosity i got on to see if the internet would somehow magically work and it did! Then i got back on this morning and it wouldnt work again. So i dont know whats up. Any advice?