on 17.02.2018 14:58
Thanks for the reply Bart and my apologies for taking so long to respond. The laptop's been on the back burner due to lack of time. I'd already seen the Russian gentleman expressing his disgust (?) at how deeply buried the CMOS battery was. I eventually extracted it using a small pair of pliers, but replacing the battery didn't solve the problem, which I'll raise in a separate thread.