Windows 7 - screen saver won't activate

My problem is that my screen saver will not operate at all, no matter what settings I use. It does work when I use the 'preview' function though. I am using the inbuilt standard screensavers. No errors pop up, the screen saver just does not actuivate when the alloted time has passed.

I am running Windows 7 x64. It's updated to the fullest extent via Windows Update. My mobo is a Gigabyte X79-UD3 running F16 Bios, the latest version.

I recently replaced my graphics with a new GTX 780Ti and I am using the latest drivers but the problems existed before the upgrade.

My screen saver is set to blank screen after 1 minute (just for testing, it's normally set to 10 minutes) and used to work perfectly in the past. I can't honestly remember when it stopped working as I am usually at the computer, so have no need of it. All my displays are set to turn off after 30 minutes (three Dell U2413 24" WS monitors), my computer is set to never sleep and hard drive set to never turn off (Kingston SSD as C: drive). Allow wake timers set to disabled. USB selective suspend setting set to disabled. All Human input devices have "Aloow this device to wake the computer" unticked.

I am using a Wireless Logitech G700s mouse and wired Logitech G19 keyboard. I mention this as my research has said that this could be the cause. However, I have removed and uninstalled the keyboard and mouse drivers and this hasn't rectified my problem. I am using the latest drivers for both, downloaded and installed from the manufacturers website today.

My Powercfg /energy report highlighted the issue for me I think and I list them below. My problem is that I have no idea how to fix these errors, so any help would be really gratefully received please.

For reference, my Device Manager is saying that I have three Generic USB Hubs, four USB Composite Devices, one USB Mass Storage Device and two USB Root Hubs, all seemingly not entering 'suspend state.'

I've tried various other things over the last two months or so since I noticed this issue but I can't honestly remember what they are. Please respond if you have any ideas and I will happily reply with the results.

I am using ESET Node32 and I have tried this with that switched off but no luck.

I have used sfc /scannow but the system file checker doesn't report any errors.

I can manually run all the screensavers by using the 'Preview' button and they all work fine when done using this method.

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Composite Device Host Controller ID PCI\VEN_8086&DEV_1D2D Host Controller Location PCI bus 0, device 26, function 0 Device ID USB\VID_046D&PID_C531 Port Path 1,5,3

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Root Hub Host Controller ID PCI\VEN_8086&DEV_1D2D Host Controller Location PCI bus 0, device 26, function 0 Device ID USB\VID_8086&PID_1D2D Port Path

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Root Hub Host Controller ID PCI\VEN_8086&DEV_1D26 Host Controller Location PCI bus 0, device 29, function 0 Device ID USB\VID_8086&PID_1D26 Port Path

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Composite Device Host Controller ID PCI\VEN_8086&DEV_1D2D Host Controller Location PCI bus 0, device 26, function 0 Device ID USB\VID_046D&PID_C228 Port Path 1,5,1

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name Generic USB Hub Host Controller ID PCI\VEN_8086&DEV_1D2D Host Controller Location PCI bus 0, device 26, function 0 Device ID USB\VID_8087&PID_0024 Port Path 1

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name Generic USB Hub Host Controller ID PCI\VEN_8086&DEV_1D26 Host Controller Location PCI bus 0, device 29, function 0 Device ID USB\VID_8087&PID_0024 Port Path 1

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name Generic USB Hub Host Controller ID PCI\VEN_8086&DEV_1D2D Host Controller Location PCI bus 0, device 26, function 0 Device ID USB\VID_05E3&PID_0607 Port Path 1,5

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Composite Device Host Controller ID PCI\VEN_8086&DEV_1D2D Host Controller Location PCI bus 0, device 26, function 0 Device ID USB\VID_046D&PID_C07C Port Path 1,6

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Mass Storage Device Host Controller ID PCI\VEN_8086&DEV_1D26 Host Controller Location PCI bus 0, device 29, function 0 Device ID USB\VID_040D&PID_6205 Port Path 1,1

USB Suspend:USB Device not Entering Suspend

The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use.

Device Name USB Composite Device Host Controller ID PCI\VEN_8086&DEV_1D2D Host Controller Location PCI bus 0, device 26, function 0 Device ID USB\VID_046D&PID_C229 Port Path 1,5,2

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