Well, as an electronics technician, I've been a computer enthusiast since the mid 70's. But I've been into high-end audio reproduction equipment since many years before that and both B&W and KEF are highly regarded manufacturers of quality audio gear.
It should be noted that speakers designed for stereo and home theater applications are also designed to operated near turntables and phono pickup devices, which are typically magnetic and very susceptible to magnetic interference.
My point being, now that you have stated the models of your speakers, I would worry even less about hard drive issues.
I just recently purchased these B&Ws, from the same speaker repairman that sold me the KEFs. I was amazed at how the KEFs, having dual 8" drivers could still reproduce every note perfectly at the lowest of volumes.
The B&Ws, with "only" a 6.5" kevlar woofer, easily go lower in bass than the KEFs, but demand that I turn that damned dial up, right now!
Since my retirement, I've been obsessed with upgrading my PC for gaming. Now that I've achieved gaming nirvana, I turned to my first love, music. I've never actually sat down and
listened to music before this, and my sound card was not getting it done, nor was I very impressed with the sound quality of the Klipsch 2.1 powered system, so when I found a digital receiver on clearance, I grabbed it and hooked it up to the Bose 301s that had sat in the garage, gathering dust for years. While the sound was a huge upgrade, it left me wanting real stereo sound, and the first day I tried Craigslist, I hit the jackpot, finding not only a good supplier of vintage and top-end newer speakers, but can repair them as well. Since we hit it off, he pulled the B&Ws off the shelf and put them away for me until the beginning of this month. He did have me test out some others he had, just to be sure I was leaving with a bit of knowledge about some things, like the fact that seeing the name Dynaco on some beat up speakers in a garage sale would be "grab them NOW" items. His were some ugly things, but man, they sure put out some great sound! He also has another set of vintage KEFs, with the massive 8"x 5" or so bass radiator combined with another 8" driver. Incredible, and with the massive magnets that my set do not have.
I have these connected with a Polk Audio 12" 300w powered sub. That's my next upgrade, and I'm also looking for a good, used integrated amp, because I just don't need the tuner section at all, and I'd prefer 40 clean watts to the 100w of so-so power from this Sony receiver. It still sounds exquisite to these ears, though.
EDIT: My choice for music is the internet radio station BellyUp4Blues. They have the best rocking blues and I've already got a huge collection of incredible blues performers I'd have never heard about except for that station. I can't say enough good things about them. The cured me of my head-banging addiction as well!