Pc — Check Power Supply On

Turn off your PC, unplug the PSU, and shine a flashlight into the fan grill on the back.

You need a (costs about $15-20). Do not use software voltage readings; they are often inaccurate. check power supply on pc

Before you buy a new $500 graphics card, you should check if your old $50 power supply is the real culprit. Here is your practical guide to diagnosing PSU issues. Use this if: Your PC is completely dead (no fans, no lights). Turn off your PC, unplug the PSU, and

This is the most basic test to see if the PSU is completely fried. Before you buy a new $500 graphics card,

One paperclip. The danger: You are dealing with live electricity. Do not touch metal parts while the PSU is plugged in.

| Voltage Wire | Target | Minimum | Maximum | | :--- | :--- | :--- | :--- | | Yellow (+12V) | 12.0V | 11.4V | 12.6V | | Red (+5V) | 5.0V | 4.75V | 5.25V | | Orange (+3.3V) | 3.3V | 3.14V | 3.46V |