Windows 10 changes screen resolution on reboot

[Mightyena]

Hi all, I recently upgraded to Windows 10 on my desktop (upgraded from Windows 7, activated and then did a clean install) and ever since I've been encountering an odd issue:

Every time I reboot the PC, the resolution changes from 1600x900 to 1024x768. This happens after both restarting and shutting down. Every time Windows boots, it resets the resolution.

My specs are as follows:
CPU - Intel Xeon X3220 (OCed to 3.2GHZ)
RAM - 8GB DDR2-800
MOBO - Gigabyte EP45-UD3R
GPU - XFX Radeon HD6870 (Using latest drivers)
OS - Windows 10 Pro

Could anyone shed some light on what's going on here, or how to fix it? Once I'm logged on, I can change the resolution back fine, and games run fine too, so it's definitely detecting my card properly and using the Radeon drivers

I must say, I'm a bit disappointed with Windows 10... Under Win 7 everything worked flawlessly, whereas under 10 I get loads of these small issues that make the experience particularly frustrating. Chief among them is the fact that Windows 10 is slow as anything - a fresh install takes longer to boot than my year old Windows 7 install did, and just generally feels less responsive than 7 did

 

[GearUp]

What worked for me on Windows 7 with Radeon HD6670U - completely uninstall the drivers then enter safe mode. Restart and install the drivers. Higher resolution was finally available.
With Windows 10 it necessary to use Command Prompt (administrator) to select safe boot and restart. Then revert to normal startup and restart.
Any OS will slow after several months whether with an SSD or not. I had to use Safe Mode with Win10 to restore normal shutdown on one system but otherwise it has been a very similar experience.
Update: after uninstalling the drivers I removed the card before using Safe Mode (might make a difference).

 

[Mightyena]

Thanks for the reply. I reinstalled the drivers twice, and it seems to have fixed itself after the second reinstall...

Regarding the slowdown, I know the OS will slow down after time, but W10 has only been installed for a couple of weeks, and has felt much slower from the beginning than my old Windows 7 install, which had been on there for almost 11 months...

 

[GearUp]

Thanks for the reply. I reinstalled the drivers twice, and it seems to have fixed itself after the second reinstall...

Regarding the slowdown, I know the OS will slow down after time, but W10 has only been installed for a couple of weeks, and has felt much slower from the beginning than my old Windows 7 install, which had been on there for almost 11 months...

Glad to hear it's working. Graphics cards can be that way so repetition can confuse what is really needed.
The OS issue may be due to motherboard drivers and BIOS. On mine I to set to use Windows 8 settings in the BIOS prior to installation. While my SSD boots up very fast, the newer system still takes a few seconds to recognize the Ethernet and start a couple services before I can use it. There are minor issues with Win10 which take a while to resolve. I had to disable wake for the Ethernet adapter after the latest update, which is probably due to drivers and BIOS for power management. I had to remove the DVD player for installation as well.
If no other issues are apparent I doubt a clean install will help.