The PC starts up and then stops right away—replaced the power supply, but nothing changed.
The PC starts up and then stops right away—replaced the power supply, but nothing changed.
I own an HP Elite 8300 CMT equipped with an i7-3770 processor, 32GB RAM, a 1050ti CPU, a 500GB HDD and a 1TB HDD (320W HP PSU). Everything was functioning properly until suddenly it wouldn’t boot at all. When I turned it on briefly for a few seconds, it would shut down before the screen could power up, then I restarted multiple times without success. After replacing a second-hand identical PSU, it worked fine for a day with no problems. Now it only boots for a short time, reaches the login page, loads after entering details, but then says it’s shutting down as if Windows had forced a shutdown. I managed to disable automatic restart once during a repair mode boot.
I’m unsure whether both PSUs are faulty or if there’s an issue with the motherboard. I’ve removed and reinserted the RAM and graphics card, cleaned dust from the case, and even replaced the CPU thermal paste. There are no electrical shocks or unusual noises. I haven’t tested for a possible kettle lead problem, but that seems unlikely.
I’m at a loss and don’t want to buy a new PC. Also, I’m limited in upgrading the PSU’s power because HP uses proprietary connections rather than standard ones, and there are mixed opinions about using adapters. Any suggestions would be greatly appreciated, as it doesn’t seem like the hardware is completely damaged, but it refuses to stay on.
It began occurring the next day after I manually shut it down with the power button (likely due to convenience), which might have affected it. Could you offer advice on diagnosing or fixing this issue?
Are you able to start in safe mode or recovery mode?
You might run SFC (System File Checker) in safe mode and recovery mode to resolve damaged OS files.
Alternatively, using a Windows installation disk can help repair the operating system.
Having trouble getting it into safe or recovery mode during startup, then after a short load it displays a shutdown message with the normal window look as if you initiated it yourself, and finally shuts down completely before any further action is possible.
I successfully put it into safe mode and executed SFC. The scan shows no integrity issues. What should I do next?