problem.

Hey everyone, could you help me solve a problem with my laptop? The operating system is Vista. Recently, the keyboard only understands Russian; it completely refuses to switch to English. Moreover, the usual and frequently used key combinations, such as Ctrl+C and Ctrl+V, have stopped working. The language icon in the taskbar has disappeared, so it's impossible to switch the keyboard layout using it. In short, I haven't been able to find a solution, although I may not have checked everything. I don't usually work with the laptop, and I'm not familiar with Vista; my husband and children usually use it. It's quite possible that the children did something. Maybe someone can suggest what the problem might be and how to restore everything to its original state? Thank you in advance, even if I don't get any advice.