My laptop gives a "system timer error" and so I probably need some guidance in replacing my laptop's CMOS battery
I've an 8 yr old Sony Vaio laptop, model PCG-F590 (a.k.a PCG-9201), which for practical purposes, stopped working 3 weeks ago. The computer boots into XP, but during the login screen, or shortly after logging in, freezes altogether, not responding to any input. Occasionally, it gets stuck during POST itself, displaying "KEYBOARD ERROR" and "SYSTEM TIMER ERROR". Some web browsing tells me that it's likely that the CMOS battery has a lifespan of around 10 years and that could be the issue here.
Before I replace the battery, is there something else I should look into? There was no physical trauma inflicted on the laptop, and I guess the system timer hardware itself hasn't gone kaput. This initially happened all of a sudden while watching a video (the sole purpose of the laptop) 3 weeks ago.
I searched online and this store indicates
that the battery is NiMH 2 cells with a mainboard connector. How specific do I have to be with the battery purchase besides the voltage and the connector type?
Most importantly, before I open my laptop, I'd like to know where the battery is located and how I should go on about replacing it? Despite my best efforts, I can't find a motherboard schematic for this laptop. The laptop's way past warranty and besides I'm not the original owner. Repair businesses here charge exorbitantly, so I'd like to do it myself.