Long wait on my part to post this Lenovo Z50-70 thing.
Long wait on my part to post this Lenovo Z50-70 thing.
Hey, I have a Lenovo Z50-70 laptop that acts weird lately. When I turn it off and hit the power button, the fan spins up, the battery light turns on, and the charging and Num Lock lights show too. Then, the screen stays black for anywhere from one to eight hours before it starts showing something like POST (or maybe before finishing that part). Once it turns on, everything works fine, including going into sleep mode. I tried sticking an external monitor to it and nothing came up. I also tried taking out the battery, hard drives, RAM, wireless adapter, keyboard, and trackpad, but none of those changes helped. Anyone have a guess about what's causing this? I think maybe the CMOS battery is the problem, but from what I've read that would usually reset the clock time, which isn't happening. Thanks so much for any help!
When you turn off and back on your computer, try holding down the power button for about 30 seconds to drain all electricity. Sometimes this clears out leftover static or fixes stuck settings. If that doesn't work and the time or date on the screen seems wrong, it means the battery inside isn't working right. If the clock is still showing even after trying the restart, maybe it's not just the memory or hard drive but something else like your operating system. For more info, check Lenovo's official website for BIOS updates that might help fix these issues.
Thanks for getting back to me. Yeah, I tried holding the power button down for a while even without the battery or charger attached, but that didn't work. Getting to the BIOS part is tricky because it takes about 8 hours to show up on the splash screen, and when it does, I only have a few seconds left before I have to press F2. I managed to get into it once though, and at that time everything was working fine—the clock was right too—and the BIOS was also fresh. But I want to try re-flashing the BIOS because it's really difficult to do so. Like you said, taking out the RAM and storage didn't help, and since this error happens during POST whether or not a boot drive is attached, I don't think it's an OS problem at all.
Hey, if you want to know more, my laptop stopped working when I started using it and ended up selling it for parts. The guy who bought it from me had another same model with a broken screen, so he just wanted the whole case to put his motherboard in. He sent me a picture of the bad board that he took out of my computer. Someone else replaced the processor (I got it refurbished) but let thermal paste leak all over the socket, and this caused some damage. Pretty cool it worked for four years like that huh?