Mum has no interest in computers at all, so you don't necessarily need to find one who likes computers.
Seconded this. I'm a Computer Engineer in-training at university, and work as a Software Engineer. Built a $1500+ computer, own a $1200 laptop, Xbox One, WiiU, Xbox 360, among many other game systems, along with an immense collection of games and movies.
My girlfriend of nearly 6 years has zero interest in almost all technology. She's an artist by talent, and disliked most school, and doesn't care about computers so long as they work when she needs them for something. It's not that she doesn't understand
anything about them, she just doesn't care to know the technicalities and what not; Just not her cup of tea or hobby.
You don't need a woman who likes technology or computers because you do. It might help, but believe me, there's a lot more to life, love, and relationships than just a similar hobby or two, not to mention I'd personally get tired of someone who was as into games as I am. Sometimes I need that nudge to take a break and go live a little, and being with someone who isn't like me, helps that happen.