toshiba satellite l505d – Has been fine for a few years, kept clean, any viruses removed quickly and effectively. Nothing bad in system now, from AVG, Windows, bunch of independent tools, etc etc.
One morning it decided not to boot, nothing on screen, no post or anything else. 5 or 6 tries later it booted, came up with BIOS error (of course from being powered down from power button) and ran fine. Next day, took three tries. Another it took 5 or 6 with no avail. Let sit for 20 mins and booted first time. Each time with boot errors of course but ti runs no problem once up.
I have swapped out memory, removed and left one stick in, switched them around etc to eliminate a dud stick, but nothing.
I thought MOBO, but when it boots, it’s fine.
Thought processor but ruled it out and it runs fine when up and logged in.
I am down to thinking CMOS battery, fits the error when booting but that can also be improper shutdown.
I’ve seen this is a common problem with Satellites, and one that most have unresolved still.
Any ideas? Anyway to confirm CMOS without removing mobo first?
Can I rewrite checksum data? Should I just try a CMOS or BIOS update?
Any ideas?