i bought a new laptop it's Lenovo ideapad Z360 and when i used it, it just
shuts down without asking me. i don't know why or what is the problem. can you help me? and also my windows 7 enterprise is not a genuine maybe it can help you and i don't have antivirus yet. -.-
You should try to return the laptop. If for some reason you cannot, even though you say its new, then you should format the hard drive and do a fresh install of a Genuine Windows 7. Backup any files you want to keep first of course but make sure to virus scan them before putting them back on.