Quick Answer
Blue-screening linked to a OLED gaming monitor is almost always a GPU driver or overclock issue rather than the display. Reinstall the driver cleanly and remove memory overclocks to settle it.
The OLED gaming monitor checklist for blue-screening
Start with the connection: use a certified DisplayPort 1.4 or 2.1 cable rated for 240Hz, because a marginal cable causes most blue-screening. Next, open Windows Display Settings and set the refresh rate to 240Hz manually rather than leaving it on a lower auto value. Then update to a clean current GPU driver and reboot. These three safe steps fix the large majority of OLED gaming monitor complaints without opening anything.
Deeper checks for blue-screening
If blue-screening continues, run DDU to fully remove the GPU driver and reinstall the current version, since leftover files commonly cause display faults. Check the monitor's firmware via its companion app and apply any update, as many OLED gaming monitor panels shipped with early firmware that caused exactly these symptoms. Disable any GPU memory overclock and test with G-Sync or FreeSync turned off, then back on, to isolate a sync conflict.
Settings that keep it stable
Enable pixel-shift and a screen saver on an OLED to avoid burn-in, and keep peak brightness sensible for desktop use to extend panel life. Make sure your GPU can sustain frames near 240Hz in your games, because a panel set to 240Hz but fed 90 fps will feel stuttery regardless of the screen. Stick with one stable driver version and apply firmware updates only from the official tool.
FAQ
Did a Windows update cause the blue-screening?
It can, because updates sometimes reset the refresh rate or swap the GPU driver. Reset the refresh to 240Hz and reinstall the driver cleanly to undo the change.
Which cable should I use for 240Hz?
Use a certified DisplayPort 1.4 or 2.1 cable rated for 240Hz; HDMI and uncertified cables often cannot sustain the bandwidth and cause dropouts or freezes. Replacing a marginal cable fixes many cases.
Is my OLED gaming monitor faulty if it shows blue-screening?
Usually not. Blue-screening on a OLED gaming monitor is far more often a cable, refresh-setting or driver issue, all free to fix. Suspect the panel only after those checks fail.
Panel still showing blue-screening after the checks?
If a certified cable, the correct 240Hz refresh and a clean driver do not help, compare current panels with solid local warranty cover.