A slow desktop PC is frustrating and unproductive. The good news is that most slow computer problems are diagnosable and fixable — and you do not necessarily need a new computer. Protech Repair in Cheam diagnoses and fixes desktop PC performance problems for customers across South London.
Quick Answer: Why Is My Desktop PC Running Slow?
Desktop PCs slow down due to a failing or nearly full hard drive, insufficient RAM, too many startup programmes, malware, an outdated operating system, overheating, or a failing power supply. Most of these issues are diagnosable and fixable at Protech Repair in Cheam.
How To Diagnose a Slow PC
Check Task Manager
Press Ctrl+Shift+Esc to open Task Manager. Look at the CPU, Memory, Disk, and Network columns. If any resource is consistently running at 90% or 100%, that is your performance bottleneck. A disk running at 100% nearly always indicates a failing hard drive or the need for an SSD upgrade.
Check Available Disk Space
Open File Explorer and check how much space is remaining on your C: drive. If it is less than 15% of total capacity, disk space is likely contributing to the slowdown. Clear old files, empty the recycle bin, and uninstall unused programmes.
Check for Malware
Run a full scan using Windows Defender or a trusted third-party antivirus tool. Malware can silently consume processor and memory resources without any obvious sign of infection beyond general slowness.
Check Startup Programmes
In Task Manager, go to the Startup tab and review which programmes are set to launch at startup. Disable anything that is not essential. Reducing startup items dramatically improves boot time.
Professional PC Repair and Upgrade Service in Cheam
If your PC is still slow after basic troubleshooting, bring it to Protech Repair in Cheam. We will run a comprehensive diagnostic and recommend the most cost-effective solution — whether that is an SSD upgrade, RAM upgrade, virus removal, Windows reinstallation, or a combination. We serve customers from Cheam, Worcester Park, Sutton, Epsom, Morden, Carshalton and all of South London.
Frequently Asked Questions
Can adding RAM to my desktop PC make it faster?
Yes. If your PC does not have enough RAM for your typical workload, adding more will make a noticeable difference to multitasking performance. Protech Repair in Cheam can advise on the right amount and type of RAM for your PC and install it for you.
Is a slow PC always fixable?
In most cases, yes. Whether the slowdown is caused by software, a failing drive, insufficient memory, or overheating, Protech Repair in Cheam can diagnose the exact cause and fix it. We offer a free diagnostic before quoting.
Get Your PC Running Fast Again in Cheam
Bring your PC to Protech Repair at 3 Cheam Common Road, Worcester Park, KT4 8TL. Free diagnosis. Same-day service for most repairs. 90-day warranty. Serving Cheam, Sutton, Epsom and South London.
Call: 020 3411 4022 | WhatsApp: +44 7543 637893
