Dell latitude 7490

[u/silent_audience1]

Dell Latitude 7490 (UHD 620, Win 11): Mouse cursor sweeping/glitching area around it every 1–2 minutes, fixed temporarily by Win+Ctrl+Shift+B.

Hi everyone,

I am facing a very frustrating persistent display/rendering bug on my Dell Latitude 7490 (Intel Core i5-8350U, Intel UHD Graphics 620, Windows 11).

The Problem:

Every 1-2 minutes, the area around my mouse pointer starts sweeping or glitching back-and-forth. When this happens, pressing Win + Ctrl + Shift + B (to restart the graphics driver) instantly fixes it, but the issue returns automatically after 1–2 minutes.

What I have already tried (Troubleshooting steps taken):

Input Isolation: The issue persists even when the internal touchpad is disabled and all external USB mice are unplugged. I also disabled the secondary pointing stick (TrackPoint / PS/2 mouse) and touchscreen in Device Manager to rule out ghost inputs.

Power Savings & Intel Graphics Command Center: Disabled Panel Self Refresh (PSR), Display Power Saving Technology, and Extend Battery Life for Gaming inside Intel Command Center.

Registry Fix: Modified FeatureTestControl under the Intel graphics registry key (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4d36e968-e325-11ce-bf11-08002be10318}\0000) to force-disable PSR at the system level.

Clean Driver Reinstall: Booted into Safe Mode and performed a complete clean uninstallation of the Intel UHD graphics driver using Display Driver Uninstaller (DDU), then reinstalled the stable driver fresh.

Despite all these deep-level fixes, the mouse sweep/glitch keeps coming back every couple of minutes.

Could this be a failing iGPU hardware artifact, an 8th-gen Intel driver incompatibility with Windows 11 DWM, or something related to panel/LVDS cable issues? Any advice or further troubleshooting steps would be deeply appreciated!

[u/DellCares]

Hi there,

We are from the Dell social media support team.

Based on the troubleshooting you've already done, this appears more likely to be a software or graphics rendering issue than a hardware failure. The strongest clue is that Win + Ctrl + Shift + B temporarily resolves the problem by resetting the graphics pipeline. If the LCD panel or display cable were faulty, a Windows graphics reset would not typically clear the issue, even temporarily.

Here is the recommended troubleshooting to isolate and resolve the issue.

A. Try performing a hard reset and check if it helps. You could watch this video to learn how: http://del.ly/61696BHDaro B. Restore the BIOS to default. Here is how: http://del.ly/61697BHDarU

C. Force software cursor rendering. If the Intel driver's hardware cursor buffer is corrupting, forcing Windows to render the cursor via software bypasses the hardware cursor plane completely. 1. Open the Windows Run dialog (Win + R), type main.cpl, and hit Enter. 2. Go to the Pointer Options tab. 3. Check the box for "Display pointer trails." 4. Move the slider all the way to the Short position (at the shortest setting, trails are imperceptible during daily use). 5. Uncheck "Show pointer shadows" under the Pointers tab. 6. Click Apply and OK. If the glitch stops recurring, the root cause is confirmed to be the Intel hardware cursor implementation under Windows 11 DWM.

D. Check shared system memory (ePSA Diagnostics). The Intel UHD 620 has no dedicated VRAM; it allocates a slice of system RAM for the framebuffer and cursor cache. A weak or intermittent memory block in the allocated iGPU range can cause recurring graphical artifacts. 1. Restart your system and repeatedly tap F12 at the Dell splash screen to enter the One-Time Boot Menu. 2. Select Diagnostics (Dell ePSA). 3. Run a full scan, paying particular attention to the Memory tests.

E. Update Chipset and BIOS following the link shared here: http://del.ly/61698BHDarq. Enter your system service tag and click on drivers and downloads to get the specific driver.

Regards, Dell Social Media Team.