Desktop looks like it's in safe mode when it isn't

  RW72 13:27 05 Jan 2017

I have a Lenovo Ideacentre 300s-11ibr whihc is running Windows 10 & when I switched on this morning the screen looks like it's in safe mode, by which I mean the icons are large & slightly stretched & everything appears over-sized. All functionality is normal - I can access the net, sound & video plays fine etc. The only thing I have noticed is that my desktop is no longer an option when I use alt-tab.

I've checked the screen resolution & it's fine, 1024 x 768, & I've gone into device manager & checked my driver software is up to date. I've been to the Lenovo website & downloaded the "Intel Gfx Driver for Windows 10 (64-bit) - Desktops" which appears to be the latest graphics driver for my PC, but nothing has changed.

I've now amended my screen resolution to 1366 x 768 which isn't perfect but at least makes things look a little more "normal" for the moment. Other than that I'm completely out of ideas. Does anyone have any clue what might be causing this & how I could go about fixing it? Many thanks.

  RW72 15:22 05 Jan 2017

Hi, thanks for the reply.

I've had a look through the settings & personalisation/themes & as far as i can tell nothing has changed. It's a total puzzle to me.

  RW72 16:28 05 Jan 2017

Thanks, I've tried that & it's still the same. I've had a browse through event viewer, but I'm not that tech savvy & I can't see anything unusual this morning. Something called Feedback Hub updated on startup but I can't imagine that caused any problems.

With the screen resolution at 1366 x 768 it's pretty much OK, just a few little issues, so I can work like this, but I'm still curious to know what on earth has happened.

  RW72 17:03 05 Jan 2017

Slightly different on mine, but if i right click on the desktop & go into Graphics Properties I get the Intel HD Graphics Control Panel up. Everything looks right in there - refresh rate is 60p Hz, Maintain Display Scaling is selected, but I don't have any option for Quantization range that I can find. There's an option to Restore Graphics Defaults, but that just resets my resolution to 1024 x 768 & the original problem of over-sized icons & text returns.

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