I just updated my Windows 8 to Windows 8.1 by Windows Store and I have some problems. My notebook is an Acer Aspire Timelinex 3820TG and I know it's little old for Windows 8 but I installed it anyway and the laptop works fine (I updated my HDD to SSD). Now I just updated Windows and I have problem with changing brightness on my dedicated graphic card (Ati HD 5650). First I can changing brightness with fn + keys but It just changing level in OS without any actual change in brightness. I tried reinstalling drivers, then installed drivers for my card from Acer that were compatible with Windows 7 and there is. When I switched to my integrated card changing brightness works. I think the problem is with drivers but I don't know how to get it working.
Bonus question: I have another problem (but this one is not so important). Does anyone knows what msietxghh.exe is doing? Everytime when my system runs (after update) I get message that this program stops working but I just cancel and looks everything works fine.
Best Answer
you guessed it right, the problem is with the drivers,
I had an Acer Aspire P3-171 with Windows 8.1 64-bit. For me the problem was with the Intel VGA 10.x driver. I dig all the drivers of 10.x , nothing worked but 9.x , 9.17.10.2932 worked for me
Try finding 9.x version of your Intel VGA driver, un-install the currently installed drivers,
or you can navigate Control Panel > Device Manager > Display Adapters > Intel HD Graphics 4000 > Driver > Update Driver > Browse my computer and there you will see a list of drivers, try switching in between and see if anything works for you
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