# 🛠️ PC Power Related Disconnect Check

# Power Supply Check (Windows)

### Download HWiNFO

On Windows machines, you can use a free tool such as HWiNFO to view your system voltage levels. 

We recommend downloading the portable version here: <https://dappcdn.com/download/utilities/hwinfo>


### Extract and Run

Extract the .zip folder, open the folder, then run HWiNFO64.exe.

 ![](https://docs.handheldlegend.com/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzU5ZGZiY2Y1LTNjZGEtNGY4OC1hMDAyLWViYzFkNmQ5NjMyOS85MzE0NmM1Ni1iOGU0LTQwZDgtYmYzZS03ZDBiYjVkN2RhZDIvaW1hZ2UucG5nIiwidHlwZSI6ImF0dGFjaG1lbnQiLCJpYXQiOjE3OTM4MTc5MDAsImV4cCI6MTc5MzkwNDMwMH0.pkj2wLVtvMjkKHwpafQe3kYYQfNh8lXYX5N3B321pDg " =455x415")


Click *Start* and ensure *Full mode* is selected.

 ![](https://docs.handheldlegend.com/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzU5ZGZiY2Y1LTNjZGEtNGY4OC1hMDAyLWViYzFkNmQ5NjMyOS9jNzg0NjAxYy0zNzQ3LTQzM2UtODNlMC01N2Q4YmE5YmNkZjcvaW1hZ2UucG5nIiwidHlwZSI6ImF0dGFjaG1lbnQiLCJpYXQiOjE3OTM4MTc5MDAsImV4cCI6MTc5MzkwNDMwMH0.Hv3Gp5wDWI4i2aJDCMVRFBqVddQzu5VpdMb1smbi41E " =455x333")


In the top bar, click *Sensors*.

Scroll down until you locate the power sensors, an example is shown below:

 ![](https://docs.handheldlegend.com/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzU5ZGZiY2Y1LTNjZGEtNGY4OC1hMDAyLWViYzFkNmQ5NjMyOS84ZjE5NTZkMC05OWFmLTRkZjUtYjE2OS04MTQxN2JlNjQ2NjkvaW1hZ2UucG5nIiwidHlwZSI6ImF0dGFjaG1lbnQiLCJpYXQiOjE3OTM4MTc5MDAsImV4cCI6MTc5MzkwNDMwMH0.sNIi8M6DClH9FR4rmR03Vb7_Z_dOpUw8IX5ySLhN_JI " =645x645")


### Test

Leave the HWiNFO application running, then run a game and try to recreate the disconnecting issue. HWiNFO will keep a running record of the minimum voltage levels. 


Once a disconnect occurs, close your game and examine the results.


Here’s an example of a PC that has a failing/sub-optimal power supply.

The three categories to pay attention to would be **+3.3V, +12V, and +5V.** 

Often times, the 12V power supply is critical for the others to function correctly. In this example below, all three have significant dips, and the customer was experiencing disconnects.

 ![](https://docs.handheldlegend.com/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzU5ZGZiY2Y1LTNjZGEtNGY4OC1hMDAyLWViYzFkNmQ5NjMyOS9mN2EwMTZjOS1iNDQwLTRmOGYtYWYwOS1kNWEzNjUwOGRkNGQvaW1hZ2UucG5nIiwidHlwZSI6ImF0dGFjaG1lbnQiLCJpYXQiOjE3OTM4MTc5MDAsImV4cCI6MTc5MzkwNDMwMH0.Tzs_2Bxw0IcxTs22Bk11mr9TE_9ItYUsbgbw1f-dlgc " =721x492")


Here’s one more example, where there’s only a dip on the **+12V** rail, and it’s significant and causing issues with the gamepad:

 ![](https://docs.handheldlegend.com/api/files.get?sig=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJrZXkiOiJ1cGxvYWRzLzU5ZGZiY2Y1LTNjZGEtNGY4OC1hMDAyLWViYzFkNmQ5NjMyOS8xZDNhNjZhYS1kOGJmLTQ1YTgtYWY4My05NjQyOTVmMWRmMWUvaW1hZ2UucG5nIiwidHlwZSI6ImF0dGFjaG1lbnQiLCJpYXQiOjE3OTM4MTc5MDAsImV4cCI6MTc5MzkwNDMwMH0.1eOF3kv7LmVn1gajLOuUzuBPhmM5dK2copefRy8Xyeg " =721x453")


# How to Fix

You will need to replace the power supply in your PC build with something that is correctly rated for your machine.

Newegg offers a free calculator tool to ensure you are selecting a power supply with sufficient capabilities: <https://www.newegg.com/tools/power-supply-calculator>