Black screen again

[Guest Med]

Hi,

 

 

 

I have a dual display running 1920x1200 with nvidia 9800GT. Vista Business

 

sp2 with latest update previously running AVG free & Adaware, now both

 

removed running MSE. IF I reboot my PC I can login, put it to standby and

 

wakeup and login again no problem. But when it ges to sleep overnight for

 

along time, say 8-10hrs+ when it wakes up I only get mouse pointer and

 

ctrl+Alt+Del or any key does not make any window visible. But strangely

 

when I guess the location of Password box by moving the mouse to the middle

 

of my main monitor, the pointer changes, even though screen still black, I

 

can type my password and login and get the screens back!

 

 

 

Initially I thought this was nVidia driver, but I removed it in safe mode,

 

reinstalled the latest version which didn't work, now I rolled back to

 

previous nvidia version which I still get black screens after wake-up.

 

 

 

Any suggestions?

 

 

 

 

 

 

 

Regards

 

 

 

 

 

Med