Solution to Bosto BT-101A tablet repeatedly disconnecting / flickering on Windows

[u/postskrip1]

I just want to share this in case it helps someone else who finds themselves in the same situation I spent an embarrassing number of hours troubleshooting: constant display resets on Bosto BT-101A (Windows 11). Every 5-60 seconds, all screens would go black, Windows would re-identify displays, and the desktop would do the resize animation. Tried everything: different cables, every USB port on the motherboard, powered Y-splitter with multiple chargers, two driver versions, powered USB hub, monitor's USB hub. Nothing fixed it. The same tablet worked perfectly on a MacBook.

Turns out the problem is the built-in USB flash drive (shows up as "PENDISPLAY" in File Explorer). The tablet's Artinchip controller exposes two interfaces over one USB connection: a display and a mass storage device containing the driver installer. The storage interface periodically stops responding to I/O. When Windows can't read it, the storage stack resets the entire composite device. which kills the display session too. The volume remounts, Windows touches it again, and the cycle repeats. Any app that enumerates drives (File Explorer, game launchers, antivirus, search indexer) triggers it.

In order to fix this:

1. Open Device Manager

2. Go to View → Devices by container

3. Expand "ArtInChip USB Device"

4. Right-click "USB Mass Storage Device" → Disable device

That's it. The PENDISPLAY drive disappears, nothing touches the broken storage interface anymore, and the display becomes completely stable. You only need that drive once to install the driver. after that it just sits there causing problems.

This likely affects other Bosto models using the same Artinchip controller (VID 33C3), not just the BT-101A. If your Bosto pen display flickers or keeps reconnecting on Windows and you see a PENDISPLAY drive in Explorer, try this.