Have you added many more programmes recently ?

The reason I ask is that you do have a lot of programmes running at start and without any AV running this is your usage

Percentage of memory in use: 69% Total physical RAM: 3036.54 MB Available physical RAM: 936.98 MB

Although having said that Avast is only using just over 30Mb on my system so that may not be a reason

CAUTION : This fix is only valid for this specific machine, using it on another may break your computer

Open notepad and copy/paste the text in the quotebox below into it:

CreateRestorePoint: ShellIconOverlayIdentifiers: [00avast] -> {472083B0-C522-11CF-8763-00608CC02F24} => No File HKLM\SOFTWARE\Policies\Microsoft\Internet Explorer: Policy restriction <======= ATTENTION HKU\S-1-5-21-2450559217-1565701889-1815041723-1003\SOFTWARE\Policies\Microsoft\Internet Explorer: Policy restriction <======= ATTENTION BHO: No Name -> {8E5E2654-AD2D-48bf-AC2D-D17F00898D06} -> No File BHO: No Name -> {AE805869-2E5C-4ED4-8F7B-F1F7851A4497} -> No File RemoveProxy: EmptyTemp: CMD: bitsadmin /reset /allusers

Save this as fixlist.txt, in the same location as FRST.exe

https://dl.dropboxusercontent.com/u/73555776/FRSTfix.JPG

Run FRST and press Fix
On completion a log will be generated please post that