02-20-2010 09:17 AM
I just bought Lenovo g560. And installed windows 7 pro. x64 and installed drivers from driver cd shipped with laptop (windows 7 drivers). After installed all drivers still I had one device unknown ; device id = Acpi\Vpc2004. In the Windows 7 solution center, there was message about download energycut and install. I downloaded and install energycut. But nothing changed and power management option program not working too.
I googled so much and couldn't find any solution.
Actually there very interesting situation, there is any driver or support about lenovo g560 on lenovo global support site. And auto detect is not working too.
Did I made mistake to buy lenovo instead of thinkpad???
If somebody have solution about this acpi\vpn2004 driver please help.
Because like that when sleep or lid laptop not waking up.
After hibernate and start computer, having blue screen and system halted message. until start without resume system.
Solved! Go to Solution.
02-20-2010 04:54 PM
I googled this: "ACPI\VPC2004 Unknown Device"
Third hit was THIS at another Lenovo forum.
Is this your solution?
12-04-2012 08:17 AM
I experienced the same issue with a Lenovo G550 with the Window 8 OS.
I downloaded the "Windows8_PM.exe" from Lenovo's web site (It was listed as beta)
installed, rebooted and it found and installed the device
No more bang (!)