HP Pavilion Prebuilt Troubleshooting Guide
HP Pavilion Prebuilt Troubleshooting Guide
Hello! My parents purchased an HP Pavilion desktop from BestBuy about a year and two months ago. They chose the preassembled unit with the Ryzen 7 5700G processor. It performed exceptionally well for a year before failing. As someone comfortable with building PCs, I know my troubleshooting skills are limited since this system uses a custom PSU and motherboard. When power is applied, the power indicator lights up, the fans spin rapidly for about three seconds, then slow down significantly. No signal appears on any of the monitors (I've tested several). I reset the BIOS and swapped in a lower-end PCI-e Radon graphics card, but still no video output. After removing the original RAM, I got a "no RAM" error beep and tried reinserting it, even in the opposite slot, without success. The power indicators remain active—lights on both the board and case—and the fans spin, albeit at reduced speed compared to normal operation. This suggests either the CPU or the motherboard may have failed. Since all my systems are Ryzen-based, I have a donor motherboard I could use to test the CPU. However, that board doesn’t include a built-in display output (I have a discrete graphics card), and it might not support the 5700G processor at all. I also have a Ryzen 7 5800XT installed there now. I have a few questions: Should I use the BIOS flashback tool to update the BIOS and enable the 5700G CPU? Would that work even if I revert to the original version? Could it be that only the graphics portion of the CPU stopped functioning? If I install it on another motherboard and it boots, would that confirm the issue is with the CPU, or could it still relate to the graphics chip? Any guidance would be very helpful. Unfortunately, the warranty expired right after the product was bought, and it just stopped working."
I've been checking various components and still can't pinpoint the issue. After testing several RGB USB devices, they didn't initialize or light up. I suspect the CPU might be the problem, but I'm not sure. The mouse and keyboard also won't turn on. I tried another Ryzen CPU (3800x) in a different PC, which wouldn't boot either, and even with the 4700g motherboard paired, it didn't power up or show any display. Both the working motherboard and working CPU are connected correctly now.