F5F Stay Refreshed Hardware Desktop After adjusting the display output settings in BIOS, the laptop still lacks a screen.

After adjusting the display output settings in BIOS, the laptop still lacks a screen.

After adjusting the display output settings in BIOS, the laptop still lacks a screen.

J
Jomppaboy
Member
Find
192
08-13-2024, 10:41 AM
#1
A few months back, a person assisted me in accessing all BIOS options by flashing the BIOS with the modified version. I experimented with the BIOS settings, switched the display from "sg" to "auto," and after restarting, there was no visible output on the screen. There were several other options available, but I couldn't recall them properly. I need to adjust the display output in BIOS. What should I do? I attempted: connecting HDMI, using the VGA port, but still no output. Resetting the BIOS by desoldering and soldering the RTC battery (I didn’t find a CMOS battery). Re-seating the RAM. Lenovo Z410 Core I5-4200M BIOS version: 8dcn38ww (modified, unlocked) OS: Windows 10 64-bit. Thank you to anyone who helped; your support means a lot.
Reply
Reply
J
Jomppaboy
08-13-2024, 10:41 AM #1

A few months back, a person assisted me in accessing all BIOS options by flashing the BIOS with the modified version. I experimented with the BIOS settings, switched the display from "sg" to "auto," and after restarting, there was no visible output on the screen. There were several other options available, but I couldn't recall them properly. I need to adjust the display output in BIOS. What should I do? I attempted: connecting HDMI, using the VGA port, but still no output. Resetting the BIOS by desoldering and soldering the RTC battery (I didn’t find a CMOS battery). Re-seating the RAM. Lenovo Z410 Core I5-4200M BIOS version: 8dcn38ww (modified, unlocked) OS: Windows 10 64-bit. Thank you to anyone who helped; your support means a lot.

Reply
Reply
O
Obicus
Member
Find
56
08-13-2024, 10:41 AM
#2
Press the startup button hard when launching the laptop. Wait a moment. Use F9 to adjust settings, then press F10 and Enter. The BIOS should reset to defaults.
Reply
Reply
O
Obicus
08-13-2024, 10:41 AM #2

Press the startup button hard when launching the laptop. Wait a moment. Use F9 to adjust settings, then press F10 and Enter. The BIOS should reset to defaults.

Reply
Reply
H
HyperMelitiX
Junior Member
Find
7
08-13-2024, 10:41 AM
#3
If it doesn't work, you can take apart the device and remove the CMOS battery. It might be a socketed CR2032 coin from a desktop board or a coin with a plastic cover and red/black wires leading to a header. I'm also interested in the BIOS—want to check with AmiBCP to see if it's just hiding settings or adding new ones.
Reply
Reply
H
HyperMelitiX
08-13-2024, 10:41 AM #3

If it doesn't work, you can take apart the device and remove the CMOS battery. It might be a socketed CR2032 coin from a desktop board or a coin with a plastic cover and red/black wires leading to a header. I'm also interested in the BIOS—want to check with AmiBCP to see if it's just hiding settings or adding new ones.

Reply
Reply
R
RocFab610
Member
Find
54
08-13-2024, 10:41 AM
#4
I already tried that; apparently there's nothing wired in cmos1 solder point (which I presume is the slot for Cmos battery). Although I did find a real-time clock battery, which was labeled rtc1 on the motherboard,. i already unsoldered the rtc1, waited until morning, and then solder it back in. which nothing happens; it still has no display output at all.
Reply
Reply
R
RocFab610
08-13-2024, 10:41 AM #4

I already tried that; apparently there's nothing wired in cmos1 solder point (which I presume is the slot for Cmos battery). Although I did find a real-time clock battery, which was labeled rtc1 on the motherboard,. i already unsoldered the rtc1, waited until morning, and then solder it back in. which nothing happens; it still has no display output at all.

Reply
Reply