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Crashes and issues with ATI Mobility Radeon HD 4200

Question asked by baskak on Apr 25, 2019
Latest reply on Apr 26, 2019 by hardcoregames™

It's a Windows 7 64-bit Lenovo ThinkPad Edge 14 E40 (upgraded to AMD Phenom II N970 Quad-Core 2.20 GHz and 8GB RAM) with ATI Mobility Radeon HD 4200 (according to the Device Manager) (however I believe I've seen 4250 detected at some moment, too)
According to the manufacturer's website it should be amd ATI mobility radeon M92-S2 XT w/512MB
I'm getting changing hues (like two different color themes, similar to night and day profiles on iOs),
random "EXT_framebuffer_object extension was not found" errors (also on unplugging the power supply), system crashes (attached).
Catalyst Control Center (2013.0429.2313.39747) doesn't seem to indicate any video hardware at all (although I remember it showing one a few months ago), and states "no AMD graphic driver (...) is installed" at startup, even though I installed appropriate drivers from
AMD website and even though I did auto-detection/installation via the Adrenalin software.
Lenovo System Update shows AMD Graphic Driver for Windows 7 (8.722.0.0) as available (optional), but after installing it it shows it available again, repeatedly.
Windows Device Manager claims optimal driver is installed (8.632.1.2000 ATI Technologies Inc.).
Also I'm getting the "too small screen area" issue on external screen, would appreciate a fix for that.