A user who wanted to upgrade his computer hardware rendered his 15-year-old be quiet! brand power supply unusable due to the use of incorrect modular power supply cables. The 850W unit, which had worked problem-free for many years, suffered significant damage as a result of carelessness during the installation of a new graphics card.

The user decided to replace his GTX 1080 Ti graphics card with an AMD Radeon RX 9070 XT. Not wanting to disrupt the existing cable setup, the user included cables from a different power supply he had on hand.

Critical Error and System Crash

Inspecting his system case to provide the three 8-pin power connectors required by the new graphics card, the user assumed his cables were compatible. When these cables, which belonged to a different power supply unit, were plugged in, a major system failure occurred the moment the computer’s power button was pressed.

Killed my bequiet! 850W P9 today after 15 years of stellar service due to a major lapse of memory (and being lazy) by
u/Sarkoth in
pcmasterrace

Reddit user Sarkoth described the event as a loud noise and a flash of light. The power supply’s internal safety circuits were instantly triggered, shutting down the entire system and ending its 15-year service life due to this carelessness.

The user has not yet confirmed whether other parts of the computer were damaged following this unfortunate experience. A detailed examination of the entire system will reveal the extent of the hardware damage.

Safety Warning for Hardware Upgrades

This event serves as a valuable lesson, especially for those building new systems and upgrading hardware. Using modular cables from different brands or models interchangeably can cause permanent and significant damage to the system.

Experts always recommend using the original cables that come with the power supply box. Ignoring this simple rule about cable compatibility can lead to both financial losses and the system becoming completely unusable.

Users need to be very careful when managing cables, especially with modular power supplies. These kinds of mistakes, made for aesthetic reasons, can cause equipment that has worked flawlessly for many years to become obsolete.

This situation experienced by user Sarkoth reminds us once again of the importance of cable standards in the technology world. Instead of being impatient during hardware upgrade processes, adhering to technical documentation and compatibility lists is always the most reliable approach.

What do you think is the biggest mistake made when upgrading computer modules, and what do you do to avoid these kinds of accidents?