I just got a second hand laptop. The battery worked when I had turned it on but I panicked and thought a long black screen was the death of my laptop. I read online and they suggested to hard reset and if that doesn't work take the battery out and back in. After battling with this laptop to try and get it to work, I've come to realize that this black screen is normal for booting up.
The laptop I have is a HP Pavillion x360 15-cr0051cl. I'm not sure if this is typical but my computer SOMETIMES boots and gives me a CMOS error, and it reboots again. 502. I tried setting it to default but I was a bit unsure. It said reset default bios security settings but I don't know if thats the right one, it's the only one so I assume so. I took out the motherboard to find the CMOS battery. There isn't one, or i didn't find it. I even updated the bios, still no luck detecting a battery. I uninstalled the driver and that whole process, still no dice. I unplugged every cable, disconnected ribbon, connector, left them unplugged, and nothing is changed. A lot of people post online the solutions, but never anything that happens outside of their answer so I need help. Is my battery fried? I'd like to know how. Was my bios corrupted and it's gone screwy? If then, what can I do? I can use it as a plugged in device but I really don't want to. It's incredibly slow and I was wondering if a faulty bios might be the cause. Please any help. Much thanks!