How to repair your computer yourself without going to the technician

In this guide we summarize the main problems that can occur on a computer, those that make the PC unusable. While in many cases these types of problems can be solved at home without going to a technician, you still need to know what to do depending on the error or the type of damage that has occurred. In this guide we therefore see the main problems of the computer when it breaks and the most immediate repairs for a Windows computer, both in case there is a problem with the operating system, and when something breaks inside the PC or one of its pieces is defective and to be replaced. The only requirement is a certain amount of time available, necessary to investigate the causes of the problem and, if necessary, to make the necessary interventions or, at least, to go to the technician with something in hand. Even if you are unable to repair your computer yourself, it is important to understand what is causing the problem.
Most of the ways to repair your computer described below are related to a fixed and modular Desktop PC, where the parts can be easily replaced. For laptops, we will see that in some cases it is still possible to do DIY repairs, although in some cases it will be necessary to bring it to service.
READ ALSO: Help tools included in Windows for every PC problem

The computer no longer turns on

If the PC does not turn on right, in the sense that you press the power button but nothing happens, the screen remains off and no light turns on, the problem is necessarily linked to the power supply that can be easily replaced without having to intervene a technician.
In another article we saw how to change the computer's power supply and it is only a question of plugs to be connected (on desktop PCs). If this is complicated or if the power supply is broken in a laptop (which can also be tied to the battery), you can go to a technician who, for this problem, should take a little time and ask for a fairly low tariff.
READ ALSO: What symptoms if the PC power supply is faulty or is about to break "> We have seen the complete guide to repair the computer in case of startup error in the following articles:
- Fix MBR on Windows to restore boot loader and computer boot
- Resolve the "Cannot find an operating system" error on Windows 10
- Solution "PC not started correctly" or "BOOTMGR missing" in Windows 10.
If Windows doesn't load, the problem can also be a broken hard drive or damaged RAM .
To verify the RAM memory has no problems, you can download a tool called Memtest which is burned onto a disc and loaded by starting the PC from the CD player. Compared to the power supply, RAM and Hard Disk are parts of a computer simple enough to replace.
For more details on these DIY repairs, I refer to the guide to add RAM memory and to the guide to install a second internal hard disk.
While changing the RAM does not give any inconvenience, when replacing the hard disk you have to think about the data inside it that you probably want to recover (if you do not have a backup on another internal or external disk).
The trick is to mount the new SATA hard drive you just bought, without removing the broken one that must be made secondary.
To recover data from the damaged hard disk you can save everything on the new hard disk using a Linux Live CD or Recover the files using a live backup program.
The best solution however is to install Windows 10 on the new hard disk and then use the old disk as a secondary one and transfer the data.
Keep in mind that broken hard drive can cause computer freezes and blue screen errors. You should then check the health status and performance of the hard disk.
READ ALSO: How to turn on the PC if Windows does not start?

Windows loads correctly, but nothing works

In this case, in 95% of cases, the fault lies with a virus . Even if missing file errors or denied permissions appear, the cause can always be a virus. On this topic I can safely refer to other very precise guides:
- How to recognize if your computer is infected with a virus.
- What to do if the PC is affected by a virus.
Except for sensational cases, it is always possible to remove a virus or malware, by yourself, using recovery CD if the computer becomes unusable.

The computer works, but shuts down or restarts itself frequently

This is the most difficult problem to identify because the causes can be different: the hard disk has some bad sectors, the temperature control sensors do not work, the fans do not cool enough, the RAM is ruined, Windows has a virus etc.
Regarding these topics I have described several typical situations in the articles:
- Blue screen responses, shutdown or sudden restart of the computer
- Ways to repair Windows 10 and create recovery disk.

The computer is fine, but errors appear and some programs don't start

In these cases the problems are of a software type and can always be solved. They could be residual effects of ill-treated viruses or problems caused by poor programs. To fix Windows from minor errors there are some Windows 10 automatic fix tools.
If the problems are widespread, you can do a reset of Windows 10, which does not delete any data, but only removes the programs. This option is completely automatic and can be found in Settings> Update and security> Recovery> Reset PC .
Thanks to this tool, you can reinstall Windows 10 at any time without using the installation DVD.
In portable PCs and those that have a partition or a recovery CD it is possible to restore the factory settings which, in some cases, solves any problem as long as the hard disk is not damaged.

Conclusions

I hope this summary guide on all the things to do to repair a Windows computer will come in handy, to know when it is possible to do it yourself and to be prepared when you bring your pc to a technician so as not to seem unwary. In fact, when bringing a computer to service, if the user does not have the slightest idea about the cause of the problem, the technician will need much more time to investigate.
Keep in mind that when you bring your PC to service you don't necessarily have to leave it for repairs, you can also ask for advice (even paid) so that you know what's wrong and how to put it on purpose (then go home and read Navigaweb ).
While then the problems related to the configuration of the operating system can always be solved by looking for solutions on Google or starting from this guide, when there is to replace a piece of the internal hardware then things can be complicated if it is a laptop. In fact, if a desktop PC is always easy to repair yourself, even if you have to replace an internal part, the situation is different for laptops, where the replacement of a hardware part such as the disk or the power supply can be much more complicated. .
READ ALSO: Portable Windows tools for PC repair and diagnosis