georob

No luck so far. Just to be sure, this is the CMOS battery right?

Thanks for the reply. Unfortunately, the CMOS battery is soldered in between the connectors, however I did manage to pry off the negative terminal and then set it back on the battery. It did not help. I will try the suggested steps by you and report back. Thanks again.

That is correct. When I press the power button or the recovery button on the side, it'll power on but nothing on the screen (not even the lenovo logo) and then resets itself. If I mash the FN+F1 or FN+B, the laptop stays powered on (I can tell from the fan and the keyboard backlight) but again the screen is blank. Can't tell if I can get into the BIOS.

Hey all, I had successfully flashed the modded Bios v2.04 on my Lenovo Y400 and had been running it without any issue for a while. However, I made the cardinal error of changing something without reading into it much and now my laptop won't boot. I changed the 'auto-select' option to integrated graphic under video configurations. The laptop powers on and then reboots. Is there any way to fix this? Appreciate any help. Thank you.