Finding a new power button for the system unit often becomes an unexpected task for PC users. When the usual press stops starting the system or, conversely, causes chaotic reboots, there is an urgent need. buy a button to turn on the computer and replace the broken element. This is not just a matter of convenience, but a necessity to continue working behind the device.
The computer components market offers various solutions: from original spare parts for specific cases to universal buttons that can be integrated into any system. In this article, we will discuss where to look for the necessary details, how to determine the type of connector and whether it is worth changing the entire body for the sake of one small detail.
It is important to understand that Power Button It is not always a standard element. Depending on the manufacturer of the body (whether it is a Zalman, DeepCool or Fractal Design), the design of the mechanism and the method of connection to the motherboard may differ significantly. Therefore, before buying, a thorough diagnosis is necessary.
Diagnosis of malfunction: whether replacement is necessary
Before you go to an electronics store or search for a part on marketplaces, make sure that the problem lies in the physical mechanism of the button. Users often search for where buy offAlthough the problem lies in oxidized contacts or downed BIOS settings. Check whether the mechanism sticks mechanically and whether it emits a characteristic click when pressed.
There is an easy way to check without buying new parts. Most motherboards have contacts to plug in the button. PWR_SW. You can gently remove the connector from the contacts of the button on the case and briefly close these two contacts with a screwdriver. If the computer starts, then the motherboard is good, and the problem is really in the button or wires.
⚠️ Attention: When closing contacts with a screwdriver, act extremely carefully. Do not touch other elements of the board, so as not to cause a short circuit, which can disable expensive system components.
If the computer is turned on, but the button requires too much pressing or does not return to the original position, then a replacement is inevitable. In such cases, the search for a spare part becomes a priority. Sometimes it is easier to find a donor on the radio market than to wait for the delivery of the original spare part from abroad.
Where to buy the switch on button for PC
The question of where to buy has several answers depending on the urgency and budget. Large computer chain stores rarely sell buttons separately, offering to buy a new case instead. Therefore, the main sites for search are specialized services and online sites.
One of the most reliable sources is the sites selling electronics repair parts, such as: AliExpress or local analogues like eBay. There you can find universal buttons with outputs under the standard connector. It’s also worth paying attention to bulletin boards where people sell disassembled enclosures or faulty system units for parts.
If you need an original button for a branded case (for example, Apple or specific game builds, it is better to contact specialized service centers. They often have access to parts warehouses or can offer a compatible counterpart. Prices can range from a few tens of rubles for a universal version to thousands for the original.
Button types and compatibility
When choosing a replacement, it is important to consider the form factor and type of connection. Standard ATX It involves using a connector with two contacts, which simply closes the circuit. However, the physical execution of the button can be different: built-in, overhead, with or without backlighting.
Universal buttons often have a standard thread pitch or a 16mm diameter mounting hole. If you are planning to insert a new button into an old case or into a homemade project, make sure the dimensions are the same. Some modern housings use complex plumes instead of individual wires, making it difficult to replace them with universal counterparts.
| Type of button | Compatibility | Where to find out. | Complexity of installation |
|---|---|---|---|
| Universal 16mm | Any case with a hole | Radio shops, AliExpress | Low. |
| Native (OEM) | Specific model of the shell | Service centers, disassembly | Medium |
| Sensory | Requires a controller. | Specialty shops | Tall. |
| Remote USB | Any PC with USB | Computer shops | Minimum |
Special attention should be paid to the buttons with lighting. If your old button was on the indicator, when buying a new one, you need to make sure that it supports LED connection, or you can refuse this feature if the new model does not have such contacts. The backlight is usually powered by a separate contact on the motherboard. PLED.
Instructions for replacing the power button
Replacing a button is a process that requires accuracy, but not necessarily high qualification. The main thing is to observe safety and sequence of actions. Before starting work, be sure to de-energize the computer by removing the plug from the socket.
☑️ Preparation for the replacement of the button
First, remove the side cover of the body. Find the wires going from the front panel to the motherboard. They're usually signed as PWR_BTN or PWR_SW. Unplug this connector. If the button is built into a complex control panel, it may be necessary to dismantle the entire front panel of the body.
If you install a universal button, you may have to solder wires from the old button to the new one or use connectors coming with the kit. Make sure the polarity for the power button is not important (it's just a circuit breaker), but for an LED indicator it's critical.
⚠️ Attention: Do not make excessive efforts when dismantling plastic panels. The plastic on older enclosures becomes brittle and may crack, leading to the need to buy a new enclosure entirely.
If the wires are too short, do not stretch them. It is better to increase the length with a conventional copper wire, twisting and isolating the connection, or use an extension cord for PC buttons.
Alternative solutions and remote buttons
Sometimes the search for the original spare part is delayed, and you need to work. In such cases, the remote switches are an excellent solution. They connect via USB or directly to the contacts on the motherboard and allow you to not depend on the state of the button on the case.
Removable buttons USB Power They look like small devices on a wire that you can put on a table. This not only solves the problem of breakdown, but also adds convenience if the system unit is far away or under the table. Such devices can be bought at any computer peripheral store.
Another option is to use the function Wake-on-LAN or schedule settings for BIOS, although this does not replace the physical button entirely. For enthusiasts, there is the possibility of reprogramming free buttons on the case (for example, Reset buttons) to the enable function through the motherboard software.
Can I use the Reset button instead of the Power button?
Yes, physically, it's possible. The Reset button (RST SW) and Power button (PWR SW) use the same principle of closing contacts. You can switch the connectors on the motherboard by swapping them. However, note that the Reset button can be designed for fewer clicks.
Cost and feasibility of repair
The cost of the button itself is usually low. Universal options on Chinese sites cost from 50 to 200 rubles. Original parts can cost from 500 rubles and more, not counting delivery. If you live in a major city, delivery can take 2-4 weeks.
Should I buy a new building? If your system unit is more than 7-10 years old, or if the case has damage, poor ventilation and outdated design, buying a new case may be a smarter investment. The new case is often equipped with high-quality buttons, dust filters and an improved cable management system.
However, if you have a rare collectible case or a model with a unique design, finding the original button is completely justified. In this case, the cost of the spare part fades into the background compared to maintaining the aesthetics and integrity of the assembly.
Buying a new case is often more cost-effective than finding a rare part if the current case is old or damaged, but for rare models, finding the original is the only right solution.
Frequently Asked Questions (FAQ)
Can I start a computer without an on button?
Yeah, it's possible. On most motherboards, you can close contacts PWR_SW a screwdriver for a single switch. There are also BIOS settings that allow power to be turned on (a.k.a.)AC Power Recovery), but this is not recommended for permanent employment.
Will any button be suitable for your computer?
Physically, yes, if it is designed for low-voltage currents. The main thing is that the mechanism is normally open (normally open). Buttons from home appliances (220V) can be used, but they can be too bulky for the case of a PC.
Why does the computer turn on after changing the button?
This may indicate a short circuit in the wire of a new button or an incorrect connection. Also check the BIOS settings and the status of contacts on the motherboard. Perhaps the new button is stuck in a closed state.
Where can I find a laptop button?
For laptops, the situation is more complicated: there the buttons are often soldered into the plume of the keyboard or board. You need to search by the exact model number of the laptop on parts sites or AliExpress, ordering either the button separately (if it is removable) or the top cover (Top Case) entirely.