Hi, i have been having problems shutting down my system. It gets as far as the blue screen with the Shutting Down text & thats it. I have hard drive activity for a few seconds & then nothing & im forced to turn off holding the power button in. I've use various tools to keep my system in top condition & this has only started over the last few weeks. Something i have noticed when i boot up is a black screen saying "Remove Boot execute record unsuccessfully NTSTATUS = 0XC0000001" after the windows 7 logo & then it loads into desktop normally. I can shut down perfectly fine if i've only been using the pc for a few minutes, but after a few hours it refuses to do so & its starting to have its toll on my system by forcing it to power off all the time. Sleep function works fine mostly, just the odd occasion when i try to wake from sleep & it just hangs on a blank screen & then after a minute my monitor goes into standby mode & then im forced to reset twice to override the system restore. Can anyone help?