I just reformatted recently, wasn't having trouble, just felt it was time. After a fresh install of Windows 7 this started to pop up after trying to install graphics driver. I tried downloading again but I don't think it installed correctly. Looking in the device manager it tells me this: Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52) I'm getting this for pretty much everything that re quires one (digitally signed drivers)... Also a problem is preventing Windows troubleshooter from starting. I can't even update windows, says service is not running... I'm on a HP Pavilion m6-1045dx Entertainment Notebook I never had to deal with anything like this on any of my computers /laptops /desktops.. only this HP!