My Acer Nitro 5 has an i5-13420H, RTX 4050, and 16 GB of DDR5 RAM. It began randomly freezing completely during use, requiring a hard shutdown. Eventually it stopped completing POST: the keyboard lit up, but there was no Acer logo, display output, or working Caps Lock indicator. A local repair shop reported a motherboard power-delivery and IC problem and said they repaired it. They also suspected a corrupted BIOS because the laptop initially showed no display, although pressing F2 eventually opened BIOS, where the RAM and SSDs were detected. Exiting BIOS allowed Windows to start normally. A few days later, the laptop froze again while gaming, then blue-screened with WHEA_UNCORRECTABLE_ERROR after restarting. It returned to the same no-POST cycle until I entered and exited BIOS again. It currently works under load, but I am worried about reinstalling Windows in case the system freezes during installation. What hardware or firmware problem could be causing this?
3 Answers
The pattern points more toward an underlying hardware problem than a Windows installation issue. RAM is one possibility, but the motherboard power circuitry, CPU, or memory controller could also be involved. Since a memory diagnostic test itself froze, that is especially suspicious and suggests the system may be unstable even outside Windows. I would have the repair shop run a proper memory test with each module separately and check the board, power delivery, and CPU under controlled testing. If the laptop is still under warranty, use the manufacturer rather than continuing with an uncertain board repair.
You can try removing peripherals and testing the RAM again, but reseating the modules alone is unlikely to fix an intermittent failure if it already failed to help before. Test one RAM stick at a time, run a bootable memory tester, and monitor whether the system freezes in BIOS or during hardware diagnostics. Freezing in those environments confirms that reinstalling Windows will not solve the root cause.
If Windows can stay running, check for files in C:WindowsMinidump and review them with a crash-dump analyzer. The WHEA error records can sometimes identify whether the failure is being reported by the processor, memory, storage, or PCIe bus. Keep in mind that missing or incomplete dumps would not rule out hardware trouble, especially when the machine is freezing before POST.
The Windows memory diagnostic also froze after running for several hours and would not let me open its options or exit.