Hey guys how yall doing anyhoot I been trying to troubleshoot a PC that cannot connect to the internet whatsoever. a few days ago this problem did not exist...but now its been here for 2 nights!! alright ill explain and start things off with which mobo it has. ASUS M4A785-M win7 ult onboard sound+LAN (realtek) alright everything is uptodate including the OS packs/updates hot fixes. pretty much its showing a NO CONNECTION available on the taskbar. 1.i inspected the physical hardware and i see no issues (spills...burns nothing). 2.I made sure that the adapter was enabled (it was) drivers...fully uptodate. 3.its registered in device manager (with no errors or warnings) 4.no IRQ issues. 5.i connected the PC directly to the ISP MODEM (reset modem, did nothing.) 6. system restore (incase someone messed with a setting of some sort) - that did not help. 7. installed a Dlink Ethernet card (win7 had updated drivers) while disabling the onbaord lan to avoid any sort of conflict. This did not help whatsoever. 8. tried different Cat5 cables, that are used with other pcs, to no avail. **I'm thinking its an OS issue. so im going to do a repair install (trying to avoid reformat if possible) im also wondering why the heck it shows as ENABLED in the network connections window...yet when i try and IPCONFIG /all it doesnt pop up (the Dlink NOR the realtek (pre-disabled) appeared). its not the router cause this PC and the other pc have no issues connecting via router. ps3 is always connected with NO interruptions (wireless) I checked BIOS - its there...but again NO connecting whatsoever. i questioned my sis and dad (their PC that has the issue) if they made ANY changes to the pc...but they are not adapt with the computer. just basic users. I have done what I could and my conclusion is Software related (operating 7) the UTTER last resort would be a new MOBO (we bought this brand new and it had NO issues prior to a few days ago.) the pC is plugged into a power bar....we had no storms or any kind of power out, not even a hiccup! everything else runs great - no virus' detected (using AVG, fully updated and registered)... OH yes it does not even attempt to renew IP if i select it to (just says NO connection available!) oh yes DHCP ENABLED - i dont have port forwarding, static or anything else like that. its all set for random. any insight advice and suggestions is appreciated. all in all thanks for reading and GAME ON!