Building a new PC? You may be able to strip your old one for some parts

building new pc may able strip old one parts scrounging

Chances are, if you’re thinking about building a desktop PC, you have probably owned one in the past. If your old system is still hanging around in a closet or basement somewhere, you can likely make use of at least a few of the old rig’s accessories and components. 

The keyboard and mouse are the most obvious candidates for repurposing. Even if they connect via old PS/2 ports as opposed to USB, many computers still have these ports. Alternatively, you can pick up an inexpensive adapter for a few bucks online.

Getting at the guts

Aside from peripherals, there are plenty of other things that could be worth scrounging from an old PC. Before you dive into your old rig though, you need to be sure that the system is powered down and unplugged.

Make sure the power supply has been unplugged for at least two days before poking and prodding it. A dangerous amount of electricity can remain in the capacitors for a while, and it’s always better to be safe than sorry.

Optical drives and storage

Unless you feel the need to buy a Blu-ray drive, your old CD/DVD drive should work just fine in your new PC. Even if it connects via an old IDE interface, rather than the newer SATA standard, there are inexpensive adapters available online. That’s an easy way to knock $20 off the price of your new build.

You can also re-use an old hard drive if it’s from a relatively current PC. Now, you probably won’t want to use an old drive as your new primary boot drive, especially if it has served several years of hard duty already.

But, if you’re looking for some free extra storage space, there’s no reason not to drop in an old drive. Just make sure you back up your important files. Drives can and do sometimes fail randomly, whether they’re a decade old, or fresh off the assembly line.

Rescue an old OS

Unless the PC you’re scrounging parts from is only a few years old, chances are you won’t want to carry over the RAM or graphics card. But if the system happens to be new enough to have a Windows 7 license, you may be able to port the license over to your new rig.

Whether you’ll be able to pull this off or not depends on some complex details, like whether the license came from a retail (store-purchased) copy of Windows, or if it came bundled with a new PC. However, it doesn’t hurt to call Microsoft and ask them to port your license over.

You’ll need to have the product key on hand to attempt this, though. If you don’t have the documentation that came with the old PC, you can try one of these methods—as long as the system still boots. This whole process can be a pain, but if it saves you from spending $100 on a new copy of Windows, it’s certainly worth it.

The tower needs power

There’s also a chance that you can salvage an old power supply for the new rig. However, there are a couple of things to consider there. For instance, you’ll want to check the sticker on the side of the old PSU to make sure that it’s rated to provide enough juice (300 watts or so should be sufficient for modern basic builds).

Second, you’ll want to make sure that the power supply has the newer SATA power connectors, rather than the old four-pin Molex plugs. You can buy adapters to convert Molex to SATA, but you may encounter an even more insurmountable problem.

Many PCs from big firms like Dell and HP use proprietary power supplies that won’t fit in a standard PC case. You can roughly measure the power supply box without removing it from the PC case. If it’s six inches wide and about 3.4 inches high, it’s likely a standard ATX power supply, and should be able to fit in a run of the mill case.

But even if you can scrounge up an old power supply, you may not want to. Modern quality power supplies are much more efficient than most of those that were built several years ago. So a little extra up-front cost now could help you down the road in the form of lower electric bills. Plus, with a new power supply, you won’t have to worry about adapters, and whether or not it will fit in your PC.

Don’t ditch your old PC until you’re done with your new build

Even after you pick an old PC clean of potentially reusable components, don’t junk it until you’re finished with your new build. You may find yourself in need of a cable or a few screws that didn’t come with your new components, and there’s a good chance that whatever you need will be in the husk of that old system.

If it saves you from having to make a trip to Radio Shack for an overpriced cable or adapter, you’ll be very glad that you held on to what’s left of your old tower until your new system is up and running.


Here’s how to install Windows on a Chromebook

If you want to push the functionality of your new Chromebook to another level, and Linux isn't really your deal, you can try installing Windows on a Chromebook. Here's how to do so, just in case you're looking to nab some Windows-only…

These Windows 10 keyboard shortcuts will update your OG Windows skills

Windows 10 has many new features, and they come flanked with useful new keyboard shortcuts. Check out some of the new Windows 10 keyboard shortcuts to improve your user experience.

Check out 25 of the best Wear OS apps for your smartwatch

Looking for some ways to spruce up that new Android smartwatch of yours? Here are the best Wear OS apps to download and use with any Android smartwatch, including a few specially enhanced for Wear OS 2.0.

The DualShock 4 is one of the best controllers ever, and you can use it with a PC

Sony's new DualShock 4 controller has become a fan favorite, and some people want to use it with a PC. Here's how to connect your DualShock 4 and start using it, either with an official adapter, or unofficial software.

Should you buy the affordable MacBook Air, or is the MacBook Pro worth the price?

Though they both share Retina Displays and similar keyboards, there are still some specs differences and other changes which distinguish the new 2018 MacBook Air and MacBook Pro. In this guide, we stack the two up against each other.

Want to save a webpage as a PDF? Just follow these steps

Need to quickly save and share a webpage? The best way is to learn how to save a webpage as a PDF file, as they're fully featured and can handle images and text with ease. Here's how.

After a month of bugs, the Windows 10 October 2018 Update is finally here

After more thoroughly investigating and resolving all bugs and related issues, Microsoft is announcing the Windows 10 October 2018 is again rolling out to consumers starting today, November 13. 

Installing fonts in Windows 10 is quick and easy -- just follow these steps

Want to know how to install fonts in Windows 10? Here's our guide on two easy ways to get the job done, no matter how many you want to add to your existing catalog, plus instructions for deleting fonts in the process.

Changing file associations in Windows 10 is quick and easy with these steps

Learning how to change file associations can make editing certain file types much quicker than manually selecting your preferred application every time you open them. Just follow these short steps and you'll be on your way in no time.
Emerging Tech

New simulation shows how Elon Musk’s internet satellite network might work

Elon Musk has the dream of building a network for conveying internet traffic via thousands of satellites. A new simulation created by a computer scientist looks at how feasible the idea is.

A dead pixel doesn't mean a dead display. Here's how to repair it

Dead pixel got you down? We don't blame you. Check out our guide on how to fix a dead pixel and save yourself that costly screen replacement, or an unwanted trip to your local repair shop.

Great PC speakers don't need to break the bank. These are our favorites

Not sure which PC speakers work best with your computer? Here are the best computer speakers on the market, whether you're working with a tight budget or looking to rattle your workstation with top-of-the-line audio components.

Printing to PDF in Windows is easy, no matter which method you use

Microsoft's latest operating system makes it easier than ever to print to PDF in Windows, but there are alternative methods for doing so, even if you want to forgo Adobe Acrobat. Here's how.

These are the 5 best free antivirus apps to protect your MacBook

Malware protection is more important than ever, even if you eschew Windows in favor of Apple's desktop platform. Thankfully, protecting your machine is as easy as picking from the best free antivirus apps for Mac suites.