I bought a replacement mobo for my dell xps 8300 on ebay, but as soon as I installed it I began experiencing problems that I never experienced with my old mobo. Stuff like hangs with windows explorer and windows update. The monitor also takes time to get a signal before I get to see the Windows 7 splash screen or pc desktop. Keep in mind everything in the pc is stock except for an updated 775W psu. I then decided to reinstall windows to see if that would fix anything. It didn't. The problems persist. I ran chkdsk and memtest+ and everything came back with 0 errors. My cpu passed prime95 stressing and my gpu was able to handle furmark burn in. Any help and/or advice would be great. If more info is needed just say the word. Thanks again!!