My desktop began to give me troubles just the other day. I have a home built computer with with an ASUS P5NE-SLI motherboard, an Asus ENGTS250 GPU, 2GB memory, a 2.5GHz Dual Core, 2 x 120GB IDE HDD, 1x 500GB SATA HDD, running a tripple boot WinXP, Win7, and Ubuntu Linux. Processor. Just the other day I had gotten back from a trip in which I had taken my desktop, once I was finished plugging it in, I pressed the power button and all the lights came on for about half a second. I turned off the switch for the power supply, turned it back on, pressed the power button and the same thing happened, lights on for and then off in the blink of an eye. I did the same thing a third time, and the computer finally came on. As it was loading the boot manager for Windows 7, an error came up that read "BootMGR image is corrupt. System cannot boot. I restarted, went to the BIOS and noticed that the menus were very laggy, there was about a 3 second delay for any key pressed to take effect. I changed my hard drive boot priority and to load up Ubuntu's GRUB, saved settings and the menu became a pixelated garbled image and my system became unresponsive. I forced restart, and GRUB loaded up fine. I was able to boot up Ubuntu just fine with no slowdowns or hang ups. As I browsed the internet using a wired connection, I decided to stream some video, after about 10 minutes of viewing, my computer unexpectedly restarted. I booted back onto linux, and checked the logs but there was no error report or message. I decided to go back and stream the same video, two minutes later, my computer unexpectedly restarted again. I booted to Ubuntu once more, tried to access the internet, but the connection was timed out. I loaded the connection manager, and pinged my ip and local loopback, both successfully. I tried to ping the router but the ping would always time out. I exited Ubuntu and decided to boot into XP. I still cannot access the internet, I can ping my self and local loopback, but cannot ping anything else. Whenevert I try to uninstall the network device in the network manager, the program just freezes and does not respond at all. I have reinstalled the drivers and still no luck. I am leaning to believe that the faulty shutdowns i described in the begining of this has caused some damage to the onboard NIC as well as corrupted several files throughout my system. Since my NIC does not work on XP, Ubuntu, and Linux, I am leaning towards a hardware issue. Are there any suggestions before I RMA my motherboard?