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Another Shutdown = Reboot thread - Exhausted Options
Hey folks - W764 Ultimate Acer 4530 AMD 4GB RAM, 1TB HD
This system is a few years old and stable. Zero problems until a few days ago. Now when I shutdown by clicking any shutdown button (Orb->Shutdown or the shutdown on the logon page), the computer shuts down but immediately reboots. Also, cannot put it to sleep. Orb-> Sleep and it goes to sleep and immediately wakes. It seems to be the same problem that is causing both.
Nothing has changed EXCEPT I had to take the laptop apart a few days ago to swap out a noisy fan, and I removed/tested/replaced the coin batt at the same time. And that's when this behavior started.
Have already checked/done everything here: Power Options and Sleep Mode Problems ...including restoring C from a perfectly good BU created 2 weeks ago way before any of this started, but the problem persists.
Also reseated the RAM and replaced the section of mobo that has the power-on button, as it's separate from the rest of the mobo and I had a spare. Also tried booting into safe mode, shutting down, and it shut down then immed rebooted. And ran chkdsk and sfc /scannow.
There is only a split second between it shutting down and rebooting, and same with putting it to sleep... the second the power button flashes off (into sleep) it blinks back on and it wakes.
There are no devices set to wake it. And no programs set to wake it. I'm at a loss! (This BIOS has almost no configurable settings. No ACPI / S1, S2, S3 settings that can be manually set. powercfg -a shows it is S3 capable and apparently that's enabled by default. I have removed the coin battery before and never had this problem... have also disassembled the laptop many times to apply new grease or whatever, and again, never had a problem.)
Would be grateful for any more ideas!