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Reverting to Standard VGA, Intel auto installer will not complete
So, after an annoying issue with my AMD Radeon HD 6470M card and PSU causing a huge issue where my laptop wouldn't boot past "Starting Windows" except in safe mode, I finally got it working by reformatting with a clean Windows 7 x64 install and not installing the AMD drivers, using the (I'm assuming on board?) Intel HD 3000. After running all of the updates for Windows and updating all drivers (specifically the Intel one), the laptop was working in top shape with basically all functionality (playing games included).
Several days ago, my boss installed Office 2010 on my laptop and in doing so screwed up the graphics again (possibly after installing a service pack for office x32 bit version while I run x64?). Now where it should say "Intel" in device manager for my display adapter, it has reverted to Standard VGA adapter and graphics look like safe mode. In the driver details it says Intel Corporation, Date 1/29/2014, and Version 9.17.10.3347. Windows update tells me this is the most recent driver version (most recent available from Samsung, my laptop's manufacturer maybe?) and I've tried running the Intel auto install but it fails and closes. Samsung also does not offer an Intel graphics driver for my laptop on Windows 7, only on XP. I've tried restoring to a point before the Office install and no change to the graphics. In the many fixes I've attempted, it was at one point showing Standard VGA with the ! and reporting that the computer could not verify the digital signature, giving "Code 52". I've also now got two "unknown" devices (both from Intel: wifi and bluetooth, which have also begun giving me issues). Seems like everything is falling apart...
Poking around I found this tutorial but I'm not sure if A. that's the correct info for my set up (if I use the Intel drivers) and B. it will help solve my issue at all. Any help? What on earth is going on here?
On a side note, how feasible is it to upgrade/replace a PSU on a laptop? :/
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