Useful Tips


We at Lewes Computer Repair have had quite a large number of laptops brought to us over the festive season as they would not start. 

The reason: overheating! 

The cause: the laptops had been used in bed on a duvet.

The result: in some cases, dead GPU (graphics card) = dead laptop

Please be aware that laptops should ALWAYS be used on a hard surface to enable it to breathe and cool down. If you want to use them in bed, place them on a tray or wooden board...


Q: I have a 4 years old computer (Laptop / Desktop) which is running slow. Should I buy a new one?

A: Not necessarily, it depends on what you are using it for and on the specs…

-          If you are using it for word processing, spread sheets, e-mails, Internet (non-processor intensive tasks)… a simple RAM upgrade, a good clean-up and a system optimisation should bring it back to life and allow you to work a lot faster.

 -          If you are using it for video editing, sound editing, presentations (processor intensive tasks)… then it will depend on the CPU (processor) you have, on the GPU (graphics card) and also on the amount of RAM and of course the operating system.


Q: My computer is running a 32-bit operating system (Vista or 7) can I upgrade to a 64-bit version?

A: No you cannot! Only a 32-bit version can be upgraded to another 32-bit version (Windows 7 Home Basic 32-bit can be upgraded to Windows 7 Professional 32-bit) the same way as a 64-bit version can be upgraded to another 64-bit version. If you want to upgrade to a 64-bit version from a 32-bit version, you will have to purchase the full version and re-install your system. You will lose all your data so you should back it up before proceeding.


Q: What is the difference between 32-bit and 64-bit?

A: Essentially, a 32-bit system is limited to 4GB of RAM where a 64-bit system is limited to 192 GB of RAM with a few exceptions:


Limit in 32-bit Windows

Limit in 64-bit Windows

Windows 7 Ultimate

4 GB

192 GB

Windows 7 Enterprise

Windows 7 Professional

Windows 7 Home Premium

16 GB

Windows 7 Home Basic

8 GB

Windows 7 Starter

2 GB



Q: What is the minimum hardware requirement to run Windows 7?






1 GHz IA-32 processor

1 GHz x86-64 processor

Memory (RAM)

1 GB

2 GB

Graphics card

DirectX 9 graphics processor with WDDM driver model 1.0
(Not absolutely necessary; only required for Aero)

HDD free space

16 GB of free disk space

20 GB of free disk space

Optical drive

DVD-ROM drive (Only to install from DVD-ROM media)


Q: I am a home user running Windows 7 and have been advised to use Norton/Kaspersky/McAfee… as an antivirus. Is there an efficient cheaper alternative?

A: Yes there is. Microsoft developed a security tool called Microsoft Security Essentials (download it here). It is a 100% free anti-virus and malware protection and works with the Windows Firewall. It is as efficient as any other anti-virus and is a lot lighter too on your processor.

Q: I have a computer that my child/children use. I have setup parental control via the tools provided within Windows Vista/7/8... however, I am not sure it is suffiscient for them to be totally safe. Can you help?

A: Children security while browsing the Internet is one of our highest concern. Give us a call and we will call out to your home and set you up properly with user friendly tools allowing you parents to have peace of mind and total control over what your children can and cannot do while on the Net.

Other tips will follow....