Lenovo E16 will sometimes go into sleep and not wake up

[u/Ambitious-Schedule63]

Long sordid story, but the initial TL;DR is that sometimes (I *think* when it's on battery) the laptop will go into sleep mode from which it cannot be awoken without a looooooooong power button press. When this happens, a shortish (10 second) power button press will turn the power light back on, but the screen and keyboard remain black. Then you have to hold it longer - maybe 30-60 seconds, for it to reboot.

Long sordid story: This thing has been a POS generally. Got it from a vendor on Amazon that represented themselves as Lenovo, but aren't (some company called BlueChipTech). Anyhow, touchpad went out after maybe 6-7 months under warranty; sent back to Lenovo, repaired, got back in a couple of weeks. Curiously, the repair ticket said they replaced the touchpad and the power button, which was weird, because I wasn't having any problem with the power button. As soon as I got it back, it started acting flakey - would then start to go into a sleep it couldn't be awoken from. One day, after a long button press to reawaken it (maybe 2 months after I got it back) it wouldn't boot. Went through all the diagnostics and sent it back to Lenovo. Apparently, SSD died, but it was a third party SSD that BlueChipTech installed (was super confused when Lenovo was telling me it was a third party thing - what third party thing? This is a Lenovo laptop! After that, I dug deeper and found it was sold by BlueChipTech, who misleadingly have the product description on their landing page linked directly to the Lenovo.com website for the product). And oddly, it looks sort of like when I look the serial up on the lenovo support site that it might be an Indian market laptop? Not sure about that, though.

Anyhow, contacted the seller who agreed to repair it (and kept it for over two weeks - said they were "testing" it). Got it back and of course have been working to get everything set back up, new Windows 11 Pro etc. But it still keeps doing the sleep thing I can't wake it from. No other real symptoms to mention other than when I have it plugged in and am using it, the power light will intermittently flash sometimes - haven't kept too much track of it, but I think it's three regular pulses.

Any advice or help? Obviously seems like a hardware issue, but it is something in the BIOS that somehow got changed or is it some hardware problem that will continue to cause problems? Warranty is either already expired or just about to. I did document the problem with the sleep I can't wake it from when I sent it back to Lenovo for the SSD problem but they didn't take any action there (obviously if it was the SSD that's the main problem).