Common PC Problems Explained

1. Slow Startup

This is probably the most common complaint we hear. A computer that used to start in 30 seconds now takes three minutes, and nobody can figure out why.

The most frequent cause is startup programs. Every time you install software, it often adds itself to the list of programs that start automatically with Windows. Over time, you can end up with dozens of programs all fighting to load at once — photo apps, cloud sync clients, media players, hardware utilities. Each one adds a little time, and together they add a lot.

The fix is straightforward: open Task Manager (Ctrl+Shift+Esc), click the Startup tab, and review what's there. Anything you don't need running immediately when you turn the computer on can be disabled. You can still use those programs; they just won't launch automatically.

The second major cause of slow startup is a traditional spinning hard drive that's getting old or nearly full. Upgrading to an SSD is one of the most impactful hardware changes you can make — boot times that took 2–3 minutes can drop to under 20 seconds. If your computer still has a mechanical hard drive, this is worth considering.

A distant third cause: Windows updates installing in the background without your knowledge. If your computer is slow on startup but catches up after a few minutes, it may be processing updates. Check Windows Update history to see if there was a recent install.

2. Overheating

Computers generate heat as a byproduct of doing work, and they rely on airflow to stay within safe temperature ranges. When something disrupts that airflow — accumulated dust, a failing fan, dried-out thermal paste — temperatures rise and problems follow.

Symptoms of overheating include: the computer getting very hot to the touch (especially on laptops, near the vents), fans running at high speed constantly, the computer slowing down during demanding tasks, or unexpected shutdowns with no error message. That last one — an abrupt power-off — is often a thermal protection mechanism. The computer shuts itself down to prevent heat damage.

For desktops, the most common cause is dust buildup on the CPU heatsink and case fans. This is addressed with cleaning. For laptops, dust in the vents is also common, but thermal paste between the CPU and heatsink also dries out over time, especially after 4–5 years. Replacing it (a process called reapplying thermal paste) can meaningfully reduce temperatures.

If cleaning doesn't help, the fan itself might be failing. A fan that's struggling to spin — you can sometimes hear it making irregular sounds — won't move enough air even with clean vents.

3. Random Crashes & Blue Screens

A blue screen of death (BSOD) is Windows's way of saying something has gone wrong at a level it can't recover from gracefully. It's more alarming-looking than it often is, but it's also not something to ignore entirely.

BSODs always include an error code, and that code matters. Some common ones: MEMORY_MANAGEMENT and PAGE_FAULT_IN_NONPAGED_AREA often point to RAM issues. DRIVER_IRQL_NOT_LESS_OR_EQUAL usually points to a driver problem. NTFS_FILE_SYSTEM can indicate a failing hard drive.

A single blue screen, especially after a Windows update, isn't necessarily cause for alarm. Windows update can sometimes install drivers that conflict with hardware. Multiple blue screens, or blue screens happening during normal use rather than after software changes, are worth investigating.

RAM is a common culprit. Windows includes a memory diagnostic tool (search "Windows Memory Diagnostic") that can run a basic test. If RAM is failing, it usually needs to be replaced — RAM isn't typically repairable.

Failing hard drives also cause crashes, often accompanied by strange sounds (clicking, grinding) or very slow file access. The S.M.A.R.T. status of a drive can indicate early failure — a technician can check this for you if you're uncertain.

4. Loud or Constant Fan Noise

Fans run louder when the computer is working harder. If you're doing something demanding — video editing, gaming, a large spreadsheet calculation — louder fans are expected. If the fans are running loudly all the time, even when you're just browsing the web, something else is happening.

Check what's using your CPU by opening Task Manager and clicking the CPU column to sort by usage. If you see a process using 80–100% of your CPU that doesn't seem like something you're actively using, that's worth investigating. Common causes: a Windows process running an update in the background (often temporary), a web browser tab running something resource-heavy, or malware running processes you didn't authorize.

If the fan noise is more irregular — grinding, ticking, or a rattling sound — the fan itself may be failing. A bearing going bad in a fan makes a distinct sound that gets worse over time. Fan replacement is relatively inexpensive and prevents the bigger problem of your components running too hot.

5. Slow Internet on One Computer

When the internet is slow on your computer but works fine on your phone or another device, the problem usually isn't the internet connection itself — it's something specific to that computer.

Start by checking if the slowness is in a specific browser only. If Chrome is slow but Edge isn't, the issue is browser-related — likely too many extensions, a cache that needs clearing, or malware that's injected itself into the browser.

If all browsers are slow, the issue might be with the network adapter drivers, a background program consuming bandwidth, or DNS settings. Running a speed test (fast.com or speedtest.net) can tell you if your actual download speed matches what you're paying for. If there's a large gap, and other devices on the same network are fine, the network adapter or its drivers are worth examining.

A background Windows update downloading in the background can also temporarily consume a significant portion of your bandwidth. If the slowness comes and goes and has no other apparent cause, check Windows Update status.

6. Storage Problems

There are two distinct types of storage problems: running out of space and the drive itself starting to fail.

Running out of space is simple to diagnose — Windows will tell you when a drive is nearly full, and File Explorer shows available space. The solution is deleting files, moving them to external storage, or adding more storage capacity.

A failing drive is more serious. Signs include files that take unusually long to open or save, error messages when copying files, strange noises (for mechanical drives), or the computer hanging at random points. Hard drives generally last 3–7 years with normal use; SSDs can last longer but aren't permanent either.

If you suspect your drive is failing, back up your files immediately — don't wait. A drive that's showing signs of failure can stop working entirely with no additional warning. Once the backup is secure, a technician can check the drive's health and advise on replacement if needed.

7. Computer Won't Turn On

There's a range of severity here. A computer that shows nothing at all when you press the power button is different from one that tries to start and fails, or one that turns on but doesn't reach the desktop.

If nothing happens at all: check the power cable, the power strip, the outlet. Press the power button firmly. These sound obvious, but loose power connections account for a surprising number of "dead" computers that we check in. If you have a desktop, the power supply itself could have failed — a relatively common and replaceable part.

If the computer tries to start but fails (fans spin briefly, then stop; or it beeps repeatedly), it may be a RAM issue, a GPU problem, or a motherboard issue. Repeated beeps have specific meanings depending on the manufacturer — a pattern of beeps indicates what the computer's self-test has identified as the problem.

If it reaches the manufacturer logo but won't continue to Windows, the drive may not be detected, or Windows itself may be corrupted. This can sometimes be repaired without data loss, though it depends on what's wrong.

8. When to Get Help

Most software-level problems — slow performance, minor crashes, browser issues — can often be addressed by a reasonably patient person following guides. The risks are relatively low.

Hardware problems are different. If you're seeing signs of a failing drive, unusual power behavior, physical damage, or persistent crashes you can't explain, it's worth getting a professional opinion before the problem gets worse. Acting on a drive that might be failing, for instance, is much cheaper than recovering data from one that already has.

We're happy to take a look at whatever's happening — and if it's something you can fix yourself, we'll tell you that too.