PC won't start ?
PC won't start ?
Hi. I understand my English is not perfect.
I had a new computer assembled with a specialist at an electronics store and picked it up from the courier yesterday.
Last night I installed Windows, drivers, and programs. It worked smoothly for several hours before turning off in the evening. This morning I tried to start it again, but after just one second it shut down and tripped the breaker. Even when I connected the PSU to the socket, I couldn't turn on the circuit breaker.
The house has three phases at 3x16 amps; I moved the computer to another room with a different phase, and it was cut off immediately. I didn’t use any other devices while attempting to start the machine. My old computer is functioning normally, so what might be wrong with this new setup?
CPU: Ryzen 9800 X3D
GPU: RTX 5070 Ti
PSU: Asrock Steel Legend 1000 W 80 plus Gold
Is there a control on the power supply that allows switching between different voltage sources?
It seems there might be an issue with the power supply unit or the power cable. Even strong PSUs typically draw between 2 and 5 amps, so this shouldn't be an issue.
The power supply unit could have failed, but if your circuit breakers are very sensitive, they might shut off during the initial surge caused by high current when switching on. This surge lasts only a few milliseconds while the 400V DC bulk electrolytic charges build up. For instance, a 550W PSU tested on Toms demonstrated such behavior: Inrush current, or switch-on surge, describes the peak instantaneous current drawn by an electrical device when it first powers up. A substantial inrush can trigger circuit breakers and fuses to activate. It may also harm switches, relays, and bridge rectifiers. Therefore, lower inrush currents during startup are preferable. On a typical 115V 60Hz AC mains, this 550W PSU experienced a current spike of 78.580A. With a 230V 50Hz AC source, the surge reached 93.990A. Both values are unacceptable; more efficient designs should have smaller spikes. Some standard 16A circuit breakers can handle a 79A or 94A surge without issue, while more delicate breakers may trip. https://electrical-engineering-portal.co...rs-essence Generally, curve C circuit breakers are suited for regular distribution tasks. If high inrush is present, curve D helps prevent false trips. Note: If the tripped breaker is rated at 16A and has a curve C rating, swapping it with a curve D model could resolve the issue. Consult a qualified electrician.
Wow, great job! The graphs really helped me understand things I didn’t think possible. The key is to see it as a puzzle. I’m giving you the thumbs up.
If you have a short window of 20 minutes, consider reviewing this discussion about a similar issue with a breaker on a new PC. https://forums. The expense of hiring an electrician to install new breakers was too high, so I recommended a premium Tripp-Lite surge protector featuring inductors (coils/chokes) to manage current spikes. Refer to my post from 10:57AM on Thursday, April 19 for more details. https://www.amazon.ca/Tripp-Lite-ISOBAR4...B0000513O4 This resource provides a visual illustration of voltage spikes layered over a standard mains sine wave. https://www.electronics-tutorials.ws/res...istor.html While the Tripp-Lite option is not inexpensive, affordable surge arrestors under $40 generally offer only protection against voltage spikes using an MOV (Metal Oxide Varistor). They don’t address the larger inrush current issues in ATX power supplies. In my view, inexpensive surge strips are ineffective since many ATX PSUs already contain an MOV. Adding another MOV would merely duplicate the problem without solving the core issue. A second MOV could potentially improve protection against lightning events. https://www.electronics-tutorials.ws/res...istor.html For deeper insights into ATX PSU internal filtering and safeguards: https://www.techpowerup.com/articles//ov.../psu/160/3 An image of an ATX PSU displays an MOV (a large blue disc) for voltage spike control and a thermistor (green disc) for managing current surges. The rectangular blue part beside the thermistor is a relay that shuts off after the initial surge subsides.