I've encountered a serious issue with my PC. It was working fine one day, and the next day I got two consecutive blue screens, both showing the "WHEA_UNCORRECTABLE_ERROR" code. After that, when I tried to reboot, the screen went black and it wouldn't post to the BIOS or the operating system. Here's what I've already tried (not necessarily in order):
1. Removed all components and attempted to boot to BIOS with just the CPU, RAM, and power supply (using integrated graphics from the CPU).
2. Switched out the RAM.
3. Shorted the CMOS pins and removed the battery.
4. Changed my monitor and HDMI cable.
5. Replaced the CPU.
The debug lights cycle through as expected, skipping the VGA light, indicating there's no graphics card signaling for booting up. I suspect the BIOS might be corrupted, but I'm unsure how to fix this since my motherboard lacks a Q-flash button or a designated USB port for BIOS recovery. Are there any other potential issues I could check, or ways to resolve this without heading to a repair shop? Any guidance would be greatly appreciated!
3 Answers
It sounds like a tough situation, but I don't really think this is a BIOS or CMOS issue. The WHEA_UNCORRECTABLE_ERROR usually points to hardware problems. Since you've already narrowed it down to a limited set of components, the culprit could either be your motherboard, CPU, or RAM. If you can get into the machine at all, checking the event manager logs may help you pinpoint which piece of hardware is failing.
If you're suspecting BIOS issues, have you considered EEPROM programming? That could potentially solve the problem, but you would need to find a local repair shop that can handle that. It might be worth it to explore this option, especially if you've already tried swapping out other parts.
I get where you're coming from, but if you've replaced all hardware already, you might just have to face that your motherboard is either physically damaged or that it's throwing the error due to a BIOS malfunction. Often, RAM or motherboard issues can be tricky to identify without proper tools. One thing I’ve found is that sometimes just switching power sources can make a huge difference.
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