I did update the BIOS and problem resolved. Thank you.  WF 
Hi, I have been facing this issue for the past two days, every time I shut down my Dell xsp 17 it shut itself down and it reboots itself back, so the only way I can shut the laptop down is by taking the battery and power cord out of the machine, I don't know what is this happen?, :emotion-18: it was before I re-installed windows 7 yesterday and I thought this issue apart from other issues will be resolve but it didn't. Any help will be greatly appreciated.
xps 17 it shut itself down and it reboots itself back