1.Viruses:- Virus is one of the most imperative causes behind a slow PC. The nature and work patter is not always same for all the viruses presented in your PC. However the intention behind residing in a PC is the same and that is to interrupt normal routines and kill processes in a PC, to convert it into a slow PC, create as much as issues/ problems it can do and ultimately to damage the PC. Viruses are sometime very dangerous and can damage the whole system and resulting in data loss or reformatting of your hard drive. As far as protection from a slow PC is concerned we can use any good antivirus program and moreover and important point safe browsing. Do not open any suspicious webpage, program or anything that might be an issue for your PC. If a virus issue is not there a slow PC can be cured.
2.Spyware:- Spyware are also the same automated computer routines or programs (Like Virus) that enter through the Internet most of the time and however the intention of these spyware is not only to damage your PC and convert it into a slow PC but a spyware is destined pick important information from your pc and take it to its pre-destined place. However huge number of spyware presented in the PC can create a slow PC issue. Now it comes how to get rid of a spyware, usually an antivirus now a days does work for a spyware that is as an anti spyware, however there are very good anti spyware available (Freeware and paid versions) they work good. Malwarebyte is one of the best example of an anti spyware program that is currently available, freeware and licensed one.
3.Temporary and other dump files presented in PC:- I have worked on many PCs so far and have experienced that there are people who do not care for temporary Internet files, prefetch and other system dump files. Though prefetch files in any browser work as a cache and speed up a slow PC while using the Internet nevertheless a huge number of these files and especially temporary files are really not needed for your PC. They certainly can create a slow PC problem in your PC. So remove them in a regular interval. You may use either windows tools to remove such files or there are many freeware available in the market that works like a charm to remove these items that may create slow PC issue for you.
4.Many unused software/ program in PC:- If your PC is full of great number of application software and other program even sometime you may not aware of it such as you have used a program and later you didnt remove it. These programs not only occupy unnecessary space in your hard drive but they also create slow PC problem in the PC. Thus please remove the programs are not needed or left in your PC without any use now.
5.Corrupted/Bloated Windows Registry:- Never ever change any registry value unless you are 100% sure about this. Corrupted registry is also one of the causes in slow PC.
6.Security Software that may steal system resources:- Though this is not the case always but it may be a possible cause behind a slow PC. Many times there are some antivirus and firewall programs that may use system resources at high and subsequently a PC becomes slow to process.
7.Fragmented hard drive:- Check in your hard drive especially for the drive your OS is installed if it is fragmented a lot? This also can create a slow PC problem.
8.Pagefile is too small:- It is the place where windows move files during its function processing. If it is too small windows doe not find much space to move the files and it may cause a slow performance or overall a slow PC. So increase it.
9.Low RAM memory:- RAM is the main memory of a PC and it processes everything while any process runs. Sometime there are programs that are big in size and they need greater memory and if your memory is low system is inevitable to become a slow PC.
10.Hardware issues: – Last but not least. This is the part and factor behind a slow PC that does not have any alternate at all. If any hardware issue is there that can only be repaired if you replace it.
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