[tjludico]

Dear Kovid Goyal,

Following your advice, I updated my graphics drivers. Below are the details of my graphics card and driver updates:

**GRAPHICS CARD**
- Manufacturer: NVIDIA
- Driver Description: NVIDIA GeForce GT 710
- Driver Provider: NVIDIA

**BEFORE UPDATE:**
- Driver Version: 27.21.14.5671 (GeForce 456.71)
- Driver Date: 30-Sep-2020
- DCH/UWD Driver: Not Capable

**AFTER UPDATE:**
- Driver Version: 30.0.14.7514 (GeForce 475.14)
- Driver Date: 10-Jun-2024
- DCH/UWD Driver: Capable

Additionally, I tested the same version of Calibre on Linux and Windows 10. Here are the results:
- On Linux (Deepin 23), the eBook reader works without any issues.
- On Windows 10, the viewer remains stuck and fails to open the book, although the index is visible in the background.

I hope these details are helpful in identifying and potentially resolving any underlying bugs. Thank you very much for your time and assistance.

Best regards,

Tomás J. Cantó