Problem with the OLD HP Compaq Elite 8300: no power up and no screen visibility.
Problem with the OLD HP Compaq Elite 8300: no power up and no screen visibility.
I purchased an old HP Compacte 8300, installed more RAM and Team Viewer, and kept it connected to my router for continuous Minecraft play. It worked smoothly for nearly a year, only shutting down occasionally. My mom unplugged it some time ago, and I never reinserted it since I hadn’t played much recently. When I tried to restart it, it gave just five beeps—indicating a memory problem. After removing the new RAM, it produced one beep but no display. There was no error code, though it seemed like a power issue. I used another power supply and still got one beep without a screen. I checked the thermal paste and found it intact. CMOS reset didn’t help. Could my motherboard be damaged?
Here are some Beep Light diagnostic codes for Compaq/HP laptops from the provided link. Consider testing by removing a RAM module, swapping slots, and checking if the issue resolves. If it does, reinstall the original RAM.
The previous five beeps disappeared, leaving just a single beep that doesn’t show any error message.
One beep indicates the POST code for hardware success and boot readiness. Are you seeing the HP Splash Screen? Or is the display black? Where is your monitor connected to the PC? Do you have a GPU installed? Or are you using the built-in video output? Which type of cable are you employing? DVI, HDMI, DisplayPort? And any adapters? If you're using a GPU, ensure the monitor is plugged into it, not the built-in video. Built-in video turns off when a GPU is active. Test with different cables or monitors if needed.
With DisplayPort, the sole alternative is VGA. I’ll attempt another display later. No GPU needed since it’s a compact model.
GPU setup is possible on a Compaq just as on any standard desktop. https://support.hp.com/us-en/document/c03483960 Two compact expansion ports are available: PCI, PCI Express x1, and PCI Express x16 graphics.