I have a dell vostro 1710 laptop that I've just finished putting back together and I ran into a problem immediately that as soon as I boot into windows, the PC immediately shuts down. Power cord has been plugged in and unplugged, makes no difference either way. I believe the problem is within my WLAN socket, when I remove the card, everything goes smooth and works fine. I don't think it's the card itself because I have switched out the card for another one and it seems to make no difference. I can successfully use an external WLAN usb device, but this is an inconvenience. Anyone have any ideas why WLAN can cause my computer to instantly shut down? Also, if I switch the wifi switch to the off position, I can startup and run fine, but as soon as I switch it to on the computer instantly shuts down. It was all working fine about 2 weeks ago then after I came back from leaving it unattended, and it was shutdown, I didn't think anything about it then I restarted it and it instantly died. It would seem like the laptop dies when the WLAN card receives power (this doesn't happen in POST?) because I can run the PC fine in safe mode (assuming because safe mode doesn't power up the WLAN card) The computer is windows 7, I have 4gig of ram, and a duo core processor.