Sigma Computer Systems

***Notice During COVID-19 Period***


Ontario's first stage of reopening begins on Tuesday, May 19th.

We will be maintaining our current protocols listed below, until further notice, for our customers safety, as well as our own.

We are not open for retail shopping. Appointment only - please call in advance for curbside drop off of any computer for servicing.

Please call the store in advance for any and all inquiries.

Our remote service is available for issues that can be resolved that way.

Our Business Hours are variable, due to Covid-19. Please call for details.


Sigma Computer Systems has been providing quality computer services to Kemptville and surrounding areas since 1997.

We were established with the main objective of providing affordable, qualified computer services to smaller urban areas. Our main focus is computer repairs, upgrades, networking and computer sales - both new and used systems and laptops.

Please contact us for product pricing and other company related information.

Featured Products


Dell Latitude E5430 - Refurbished

$339.00 In Stock

14", Intel Core i5 3rd Gen, 4GB, 120GB SSD, DVD-RW, Windows 10


Dell Latitude E5440 - Refurbished

$439.00 In Stock

14", Intel I5 Processor 4th Gen, 8GB, 120GB SSD, DVD-RW, Windows 10


Lenovo Thinkpad T440 - Refurbished

$440.00 In Stock

14", Microsoft Windows 10 Professional, Intel I5, 4th Gen, 4GB DDR RAM, 240GB SSD (new)

Lenovo X1 Carbon - Refurbished

$599.00 In Stock

Lenovo X1 Carbon 14" Notebook - Intel Core i7-4600 8GB RAM - 256GB SSD GB HDD - Windows 10 64-bit.

"The Ryan’s Well Foundation is grateful for the excellent service and advice given and highly recommends Sigma Computers. Their attention to detail as well as available support has been very much appreciated."

Home and Business Systems

  • Asus H370-A-CSM Mainboard
  • Integrated Video, Network, Sound
  • INTEL i3 8100 Processor
  • CRUCIAL DDR4 2400 4GB 8GB (2x4)
  • Samsung 250GB EVO 860 Solid State Drive
  • LG DVD-RW
  • Coolermaster N200 Case
  • Thermaltake 600W Power Supply
  • Windows 10 Home Premium 64Bit
  • Monitor sold separately.

    $n/a
  • Authorized Reseller

    • Authorized Reseller

    Products Available

    • Cabling
    • Card Readers
    • CD/DVD Disc Medias
    • Computer Cases
    • Computer Systems
    • Cooling
    • Digital Cameras and Web Cams
    • Flash Drives
    • Gaming Accessories
    • Hard Drives
    • Hard Drives - External
    • Hard Drives - Notebook
    • Hard Drives - Solid State
    • Headphones and Microphones
    • Keyboards
    • LCD Monitors
    • Memory (RAM)
    • Mice
    • Motherboards
    • Network - Switches
    • Network - Wired
    • Network - Wireless
    • Notebook Accessories
    • Notebooks
    • Power Protection
    • Power Supplies
    • Processors
    • Sound Cards
    • Speaker Systems
    • Tablet PC
    • Video Capture Products
    • Video Cards