I have a Thinkpad T420. Recently, made a fresh install of the stock OEM Win 7 on it. Subsequently used Slimdriver to install latest drivers that the bundled Lenovo ThinkVantage missed out on updating. Slimdriver mostly detected newer versions Nvidia drivers, which ThinkVantage missed.
I am not very sure whether it is because of these Slimdriver installs, but now whenever the machine goes to sleep ( either on inactivity or lid close ), it shuts down illegally.
I have fiddled with almost all the power option settings; both on Win 7 power options and Lenovo Power Manager
I have the "hybrid sleep" turned OFF.
However, if I turn ON "hybrid sleep", the computer doesn't shut down illegally but goes into "hybrid sleep"
I do not want hybrid sleep. I just want normal sleep.