How do you diagnose a computer hardware failures?

Answer 1

Every computer has hardware problems eventually, so it's important to keep hardware diagnostic tools on hand. It could be because your computer will not boot due to a problem which could be either hardware of software related.

But you don't need to spend money on expensive tools. These five free tools can help you diagnose most hardware problems.

1. Memory Scan

It's almost impossible to diagnose a problem with your computer memory (RAM) without a memory scanner. Luckily, you don't need a special hardware memory checker-you can use a tool to boot your computer into a special mode which will check your memory. There are several good tools, but I recommend the open source MemTest86, which works on Intel-style 32-bit and 64-bit PCs.

2. CheckDisk / BadBlocks

If you think your hard drive has a problem, you need to check the whole drive for possible errors. If you find a few errors, you may be able to continue to use the drive as long as you re-check the drive on a regular basis. If you find a bunch of errors, you'll need to replace the drive.

The free tool built into Windows XP and higher to check your drive is called CHKDSK (for Check Disk). Linux bootable CDs and USB drives include a similar but more comprehensive tool called badblocks.

3. Spare Cables

Although spare cables aren't free if you buy them separately, most people who regularly buy computer accessories tend to accumulate spare cables. Don't throw out those spare cables. A surprisingly large number of hardware problems are caused by failing cables, and swapping your current cable with a spare is a simple and free way to test whether or not your problems are caused by bad cables.

Answer 2

To diagnose a computer problem you must first check any newly installed hardware and software. Secondly, run a virus and malware scan. Sometimes downloaded games and other programs can have a virus.

Answer 3

Start by isolating the piece of hardware that you think is failing.