Kyle Kucharski/ZDNET
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**ZDNET’s Expanded Key Takeaways:**
Every modern personal computer operates with dozens of concealed background processes. Each of these consumes small segments of the system’s available memory, collectively influencing the overall performance and responsiveness of the device. While the majority of these processes are essential to ensure the proper functioning of the operating system and applications, a handful are either redundant or unnecessarily resource-intensive. Disabling or fine-tuning such processes can be an effective way to reclaim memory and optimize your PC’s performance. Evaluating which applications start automatically during system boot is an excellent initial diagnostic step.
If your computer has recently felt noticeably slower or less responsive, there are countless potential reasons—ranging from heavy software usage to insufficient available memory. However, among all the potential troubleshooting methods, reviewing how your PC’s memory is being allocated often yields the most immediate insight. By pressing **Ctrl + Shift + Esc** to open the Windows Task Manager and sorting the active programs by memory usage, you can easily identify which applications are consuming the most RAM. Predictably, browsers such as Google Chrome or Microsoft Edge, along with office productivity tools like Microsoft Word or Excel, will usually dominate the list. Beyond these, you may encounter unfamiliar processes that nonetheless occupy valuable resources.
Many of these background functions cannot—and should not—be terminated, as they play crucial roles in maintaining stability and user experience. Yet, some optional processes can be safely halted, offering tangible performance boosts, especially on older or budget hardware. The most effective strategy is to locate the primary culprits responsible for memory leakage or excessive consumption. These often include an overabundance of open browser tabs, preinstalled manufacturer bloatware, and applications that activate automatically at startup without explicit user demand. Another often-discussed process, **SysMain**, preloads frequently accessed applications, which can sometimes be detrimental rather than helpful. The following sections elaborate on how to manage each of these efficiently.
**1. Your Browser**
Among all the programs running on your PC, the web browser almost invariably ranks at the top in terms of memory consumption. Chrome and Microsoft Edge, both widely used, are known for their robust capabilities but also for their heavy system footprint. Each additional open tab effectively functions as an independent process, steadily consuming more RAM and affecting performance, particularly on devices with limited resources. Fortunately, Chrome includes an internal task manager that allows you to examine memory usage on a granular level.
To access this feature, click the three-dot menu in the top-right corner of the Chrome window, navigate to **More Tools > Task Manager**, and then sort by memory footprint. You’ll quickly be able to identify specific tabs or extensions that are disproportionately straining your system. From that same view, you can directly close problematic tabs—instantly freeing up memory and improving responsiveness.
Rather than keeping dozens of tabs open, consider taking advantage of Chrome’s **Favorites** and **Reading List** features to save web pages for later reading. To do so, open the three-dot menu again and select **Bookmarks > List > Reading List > Add to Reading List**. Ensure that the “Show Reading List” option is enabled so you can easily retrieve these pages later without leaving them open indefinitely.
**2. SysMain**
SysMain, historically known as **Superfetch**, is a built-in Windows service designed to accelerate application launch times. It achieves this by preloading commonly used programs into memory based on your previous usage patterns. However, while this approach can theoretically make frequent apps start faster, it also dedicates a constant portion of your PC’s memory to preloading data—an approach that may hinder overall performance on systems with limited RAM.
The Windows community remains divided on the value of this feature. Some users report noticeable improvements after disabling SysMain, describing smoother operation and faster boot times. Others argue the difference is negligible. If you wish to test it yourself, the process is simple and reversible.
Press **Win + R** to open the “Run” dialog box, type **services.msc**, and press Enter. The Services interface will list every background process currently active on your machine, along with descriptions of their functions. Scroll down to **SysMain**, double-click it, and press the **Stop** button to halt it temporarily. In the **Startup Type** dropdown menu, select **Disabled**, then click **Apply** and **OK**. This action prevents Windows from preloading applications, potentially freeing up memory and slightly improving performance consistency.
**3. Manage Your Startup Applications**
Over time, many installed programs quietly request permission to launch whenever your PC boots up. While automatic startup is logical for security or productivity software that must always run, it’s unnecessary for numerous secondary applications. The result is slower startup times and unnecessary background memory consumption.
To review and control this behavior in **Windows 10** or **Windows 11**, open **Task Manager** with **Ctrl + Shift + Esc**, then navigate to the **Startup** tab (if it’s not visible, click “More Details”). You’ll see a list of all programs configured to start automatically. By right-clicking on the column headers, you can reveal additional details, including each program’s recorded impact on startup speed. Identify the ones you rarely use, right-click on them, and select **Disable**. This does not uninstall the software; it merely prevents it from launching until you manually open it.
If you later decide to re-enable a service, you can do so either from the same window or, in the case of system processes like SysMain, through a command prompt. Open the **Start Menu**, search for **cmd**, right-click **Command Prompt**, and choose **Run as Administrator**. Then type:
`sc config “SysMain” start=auto & sc start “SysMain”`
Finally, restart your computer to apply the changes.
**4. Bloatware**
Many newly purchased PCs ship with preinstalled software provided by their manufacturer—often referred to as **bloatware**. These applications may range from promotional tools and trial antivirus suites to proprietary utilities meant to encourage brand engagement. Unfortunately, they frequently consume resources without providing tangible benefit, particularly when left running in the background.
You can remove such software in two straightforward phases. First, disable them from the **Startup** tab in Task Manager so they no longer launch automatically. Then, navigate to **Settings > Apps > Installed Apps (or Add or Remove Programs)** to completely uninstall them. Eliminating bloatware not only frees up memory and storage space but also ensures your PC runs smoother, cleaner, and more efficiently from startup to shutdown.
In summary, maintaining a fast and responsive PC involves understanding how background processes and startup applications use system memory. By adopting these targeted adjustments—monitoring browser activity, experimenting with SysMain, managing startup apps, and removing unnecessary manufacturer software—you can reclaim valuable resources and restore your computer’s full performance potential.
Sourse: https://www.zdnet.com/article/apps-slowing-my-pc-how-to-kill-memory-hogs/
