Does your PC take forever to boot? Do programs freeze, stutter, or crash at the worst moments? You’re not alone — and you’re probably not imagining it. Most PCs slow down noticeably within 2–3 years of regular use, and the culprits are almost always fixable without spending a fortune.
At Computer Cures, we’ve been providing PC repairs across Melbourne for years. Below are the 7 most effective ways to speed up a slow computer — from free DIY fixes you can do right now, to affordable hardware upgrades that make your machine feel brand new.
Turn Off Startup Programs
Impact: High | Difficulty: Easy | Cost: Free
Every time you start Windows, a hidden army of programs fires up in the background — eating RAM, slowing boot times, and running processes you didn’t ask for. This is one of the most common and fixable reasons a PC feels slow right from the moment you turn it on.
How to do it on Windows 10 / 11:
- Press Ctrl + Shift + Esc to open Task Manager.
- Click the Startup tab (or “Startup apps” in Windows 11).
- Sort by “Startup impact” — focus on High and Medium items.
- Right-click anything you don’t need at boot and select Disable.
Common culprits include Spotify, Teams, Discord, Skype, OneDrive, and manufacturer-installed update utilities. Disabling even 3–5 unnecessary entries can shave 30–60 seconds off your boot time.
On older machines still running the legacy System Configuration tool: press Win + R, type msconfig, open the Services tab, tick “Hide all Microsoft services”, then uncheck anything unfamiliar.
Reduce Startup Programs
Remove Bloatware & Unused Software
Impact: High | Difficulty: Easy | Cost: Free
Most new PCs — especially from brands like Dell, HP, and Lenovo — come pre-loaded with software you’ll never use. This is called bloatware. It takes up storage, runs background processes, and can even slow your antivirus scans. Over time, you’ll also accumulate unused programs yourself.
How to uninstall programs in Windows 10 / 11:
- Open Settings → Apps → Installed Apps (Windows 11) or Control Panel → Programs and Features (Windows 10).
- Sort by “Install date” to find the original bloatware, or by “Size” to find the biggest offenders.
- Uninstall anything you haven’t used in the past 6 months — trial software, manufacturer apps, toolbars, and media players you replaced with better alternatives.
You can also check out PC Decrapifier (free utility), which scans for known bloatware and rates how safe each program is to remove. However, always verify its recommendations before deleting anything.
Remove unwanted software
Use PC Cleanup Tools — But Choose Wisely
Impact: Medium | Difficulty: Easy | Cost: Free
There are hundreds of “PC optimiser” and “registry cleaner” tools online. Most are useless — and some are actively dangerous (disguised malware). That said, a small number of legitimate tools are genuinely effective at clearing junk files and temporary data.
Tools we recommend:
- BleachBit (free, open-source) — clears caches, temporary files, cookies, and browser junk safely.
- CCleaner Free — still useful for one-click junk removal, though we recommend avoiding the paid “registry cleaner” function (Microsoft itself advises against registry cleaning on modern Windows).
- Windows Storage Sense (built-in) — set it to automatically clear junk every 30 days.
According to Microsoft’s official guidance, built-in tools like Disk Cleanup and Storage Sense are the safest options for most users.
Use PC Cleanup Tools
Run Disk Cleanup & Enable Storage Sense
Impact: Medium | Difficulty: Easy | Cost: Free
Windows accumulates thousands of temporary files over time: Windows Update leftovers, browser caches, system error logs, and more. Clearing these regularly keeps your drive from filling up and your system running cleanly.
Running Disk Cleanup (Windows 10 & 11):
- Open the Start menu and search for Disk Cleanup.
- Select your main drive (usually C:) and click OK.
- Once results load, click “Clean up system files” for a deeper clean (this requires admin access).
- Tick all relevant boxes — especially Windows Update Cleanup and Temporary Internet Files.
Enabling Storage Sense (Windows 11 — recommended):
- Go to Settings → System → Storage.
- Toggle on Storage Sense.
- Click “Configure Storage Sense” to set it to run monthly and clean Recycle Bin / Downloads automatically.
Disk clean up
Scan for and Remove Malware
Impact: Very High | Difficulty: Easy–Medium | Cost: Free
Malware is one of the most common — and most overlooked — reasons for a slow computer. Viruses, spyware, adware, and cryptojacking software all run silently in the background, consuming your CPU, RAM, and internet bandwidth. Your machine may feel slow even when “nothing is open.”
Warning signs your PC may have malware:
- Unexpected browser redirects or pop-ups
- Programs opening or closing on their own
- CPU fan running loudly even when idle
- Antivirus disabled or unresponsive
- Unusual network activity (unexpected data usage)
What to do:
- Run Windows Defender (built-in) — full scan, not quick scan.
- Download and run Malwarebytes Free as a second opinion scanner.
- If infections are found but not fully removed, seek professional help — some malware resists standard removal.
For ongoing protection, see our recommendation on why antivirus software is essential — even in 2025.
Remove malware
Upgrade Your RAM
Impact: High | Difficulty: Medium | Cost: $60–$150
RAM (Random Access Memory) is your computer’s short-term workspace. When you run out of it, Windows starts using a portion of your hard drive as “virtual memory” — which is dramatically slower. The result: stuttering, freezing, and the dreaded spinning cursor.
How much RAM do you need in 2025?
- 4GB — Bare minimum. Struggles with basic multitasking on Windows 10/11.
- 8GB — Good for everyday use: browsing, email, Office, streaming.
- 16GB — Recommended for creatives, remote workers, and anyone with multiple browser tabs open.
- 32GB+ — Video editing, gaming, 3D rendering, software development.
Not all PCs allow RAM upgrades — some modern laptops have RAM soldered to the motherboard. Before purchasing, check your specific model. Our Melbourne team can advise on whether your machine is upgradeable and source compatible RAM for you. Learn more about our laptop RAM upgrade service.
Install RAM
Replace Your HDD with an SSD
Impact: Very High | Difficulty: Medium | Cost: $150–$300 installed
If there’s one upgrade that transforms an old, sluggish PC more than anything else, it’s replacing a mechanical hard drive (HDD) with a Solid State Drive (SSD). A modern SSD can make a 5–7 year old PC feel almost new — boot times drop from 2–3 minutes to under 20 seconds, and everyday tasks like opening files and loading apps become near-instant.
HDD vs SSD — the key differences:
| Feature | HDD | SSD |
|---|---|---|
| Boot time | 60–180 seconds | 10–20 seconds |
| Read/write speed | 80–160 MB/s | 500–7,000 MB/s |
| Moving parts | Yes (fragile) | No (durable) |
| Noise & heat | Audible spinning | Silent, cooler |
| Cost (1TB) | ~$60–$80 | ~$100–$150 |
We also offer NAS (Network Attached Storage) solutions if you need to move large volumes of data off your main drive without losing access to it. Read our full comparison of HDD vs SSD for more detail.
Upgrade Hard Drive
Bonus: Windows 11 Performance Tips (2025)
If you’ve recently upgraded or received a new PC with Windows 11, there are a few additional settings worth adjusting to keep your system running at its best:
- Disable Bing in Start Menu: Windows 11’s integrated web search can slow down searches. Go to Settings → Privacy & Security → Search permissions and turn off “Show search highlights.”
- Turn off Widgets: The new Widgets panel (news feed) consumes background resources. Right-click the taskbar and disable Widgets if you don’t use it.
- Enable Hardware-Accelerated GPU Scheduling: For newer graphics cards, this can reduce GPU bottlenecks. Find it under Settings → System → Display → Graphics → Default graphics settings.
- Adjust Visual Effects for Performance: Search for “Adjust the appearance and performance of Windows” and select “Adjust for best performance” or manually untick animations you don’t need.
- Check Windows Update: Pending updates can hold system resources and cause slowness. Go to Settings → Windows Update and install anything outstanding.
Frequently Asked Questions
Why is my PC so slow even though it’s not that old?
Even a relatively new PC can slow down quickly if it’s accumulated too many startup programs, had software updates that increased system requirements, or has filled its drive. On Windows 11 in particular, background services like Widgets and search indexing can noticeably impact performance on lower-spec machines.
Does adding RAM speed up a PC?
Yes — if you’re running out of it. Check Task Manager (Performance → Memory). If your RAM usage regularly hits 80–90% during normal use, upgrading from 4GB to 8GB or 8GB to 16GB will make a significant difference to multitasking speed and overall responsiveness.
Is an SSD upgrade worth it for an old PC?
In most cases, yes — especially if the rest of the hardware is still capable. An SSD upgrade is the single most impactful hardware change you can make to an older machine. Boot times drop from minutes to seconds, and general responsiveness improves dramatically.
How much does it cost to speed up a PC in Melbourne?
A professional PC tune-up (removing bloatware, disabling startup programs, cleaning temp files) typically costs $89–$149 at Computer Cures. An SSD upgrade including data migration is usually $150–$300 depending on the drive size. RAM upgrades start from around $80–$150 installed.
Can malware slow down my PC without me knowing?
Yes. Cryptojacking malware, in particular, silently uses your CPU and GPU to mine cryptocurrency in the background. Your machine may feel sluggish with no obvious reason. The CPU fan running loudly at idle is a common giveaway. See our malware removal service if you suspect this.
Should I factory reset my PC to make it faster?
A factory reset can help if the PC is severely bloated or infected, but it should be a last resort — you’ll lose your programs and need to reinstall everything. In most cases, the tips above (especially startup management, malware removal, and an SSD upgrade) achieve better results without that disruption. If a reset is needed, our technicians can help manage it safely.
