Updated on 2/9/2015 to reflect new pricing and recommendations
Have an old computer lying around the house? Don’t just throw it away. Computers house all sorts of toxins that are bad for the environment and all of us who live in it. Not to mention the personal information—passwords, account numbers, license keys or registration numbers for software programs, addresses and phone numbers, medical and prescription information, tax returns and other personal documents—that you would rather not fall into the wrong hands.
So what to do?
How to delete your personal information
However you choose to dispose of your computer, you need to do several things if you don’t want a stranger to access your data.
Save important files
Back up your files or transfer them to a new computer. While you can certainly invest in an external drive, the simplest way to do this is to use a cloud service such as Google Drive or Microsoft’s OneDrive. Google Drive gives you 15GB of storage for free and if you need more you can buy 100GB for $1.99 a month and 1TB for $9.99 a month. OneDrive gives you 15GB of free storage with options to buy 100GB, 200GB and 1TB for a monthly subscriptions of $1.99, $2.99 or $6.99 respectively. Apple iCloud only offers 5GB free and their 1TB option runs $19.99 per month while Dropbox offers just 2GB free, but their 1TB option is $9.99 a month currently.
After backing up your files in the cloud, you can easily transfer them to a new machine or access them anywhere you have an Internet connection, even from your smartphone. Cloud storage also comes in handy if your computer dies and you need to restore your files or you’re traveling and need access to data on a different device.
“Wipe” your hard drive clean
Simply deleting files won’t cut it. Even if a file name doesn’t show up on the list of available files the old file data is still there until it is overwritten and a bad guy can use a data recovery program to retrieve it. We’ve outlined the steps we recommend you take below.
- Delete and overwrite sensitive files. If you have tax documents and other sensitive files, make sure you delete these files with specialized software designed to meet government standards for secure deletion. For Windows PCs try File Shredder (free) and for Macs you can choose the Secure Empty Trash option after deleting your files. You can find it under Finder > Secure Empty Trash.
- Deauthorize your computer. Some programs, such as iTunes and Microsoft Office 365, only allow you to install software on a limited number of computers or allow a limited number of computers to access your files. So be sure to deauthorize your old computer with your accounts – before uninstalled your programs.
- Delete your browsing history. Most browsers save information about your browsing history and, depending on your settings, can even store your user names and passwords various sites. Obviously, you don’t want a stranger having access to this information. For Internet Explorer, you click on the cog wheel in the upper right corner to open the browser menu, then on the Safety option and then Delete Browsing History. Make sure all of the check boxes are selected so everything gets removed. Repeat this for any other browsers on your computer—Firefox, Safari, Chrome.
- Uninstall your programs. Some programs, such as Microsoft Office, may contain personal information such as your name and address or other details. So be sure to uninstall any programs before disposing of your computer.
- Consult your employer about data disposal policies. If you use your computer for business purposes, check with your employer about how to manage business-related information on your computer. The law requires businesses to follow data security and disposal requirements for certain information that’s related to customers.
- Wipe your hard drive. Once you’ve gone through and removed the data you know is there, it’s time to remove anything else that may still be lingering. For PCs, the safest way to do that is to use a hard drive wiping program. Microsoft recommends Active@ KillDisk and Softpedia DP Wiper (both free downloads). Once you’ve gone through and removed the data you know is there, it’s time to perform a factory reset to ensure you’ve removed all of your personal files and software programs.For Macs, you’ll want to erase and reinstall OS X. In the menu bar, choose Apple menu > Restart. Once your Mac restarts (and the gray screen appears), hold down the Command and R keys. Select Disk Utility, then click Continue. Select your startup disk on the left, then click the Erase tab. Choose Mac OS Extended (Journaled) from the Format menu, enter a name, then click Erase. After the disk is erased, choose Disk Utility > Quit Disk Utility. Select Reinstall OS X, click Continue, then follow the onscreen instructions.
How to dispose of your computer
To avoid all those toxins ending up in a landfill, the better choice is to recycle, donate, trade-in or sell your computer.
Recycling your computer
If you opt to recycle it, keep in mind that some recyclers will simply take your old machine and ship it over to developing nations where children are often used to scavenge piles of e-waste looking for valuable components. To avoid contributing to this irresponsible practice, use a recycler that is part of the “e-Steward” network, meaning they don’t export to places like Pakistan or China, and they follow other high standards. Many of them also will reuse and refurbish electronics. The Electronic TakeBack Coalition offers tips for other ways to responsibly offload your electronics if one isn’t located near you.
Trading-in your computer
As for trading in your PC or laptop, there are scads of companies that offer trade-in programs through which you can sell a wide assortment of used electronics. A few options include BestBuy.com, Gazelle.com and the Amazon Trade-In program. Your local Best Buy also has trade-in options, but compare what it offers against the online services first.