I have a USB 3.0 hub going with AC power adapter, so it has enough power for itself, and it did not matter if I plugged in one, two or three USB flash drivers, it always worked well. (It is 7 port USB 3.0 hub). Suddenly since April until now my laptop turned to sleep immediately when I plugged only one USB flash drive in, I turned back on then the laptop slept again.

Is something wrong with the hub or with my laptop? How to fix it? Thank you. It is Windows 10 version 20H2