Why is my computer so slow?

Vichy97

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Sep 12, 2013
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ok so i have had my computer for about a year and had no problems with the speed, but yesterday it started to slow down a lot. it will take about 5 minutes to boot now instead of about 1. When i opened the case i noticed one of the fans was unplugged so i plugged it back in but it is still slow. i thought there might have been heat damage so i ran prime95 to stress test it but there was no problems. So why is my computer so slow?
 
Solution
Ok - the virus and HDD were the most likely problems - but not neccesarily the only source.

What I would suggest is to open the case up - blow out any remaining dust - turn it on and inspect all the fans - including the power supply fan. (ok - simplistic - but start with the basics of airflow).


you are going to go through a process of simplification and testing. By this - you will remove just about everything you don't really need and test each step.

Next if you have onboard graphics and an addon card - remove the card and switch to onboard. If not - disregard - as you will want some video. Remove all but one stick of memory, only provide power to your C: drive, and remove all other peripheral cards.

You should only have the...

Vichy97

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Sep 12, 2013
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ok i know it isnt a virus beasue it doesnt have internet connection and i havent installed any new software since it started but i will run the disk check. What would have caused the drive to go bad anyway?
 

Vichy97

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Sep 12, 2013
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ok i did disk check and defrag and they both said successful, but it is still slow. It runs fine when i play games like bf4, but it is only slow when it starts up and when i try to empty trash or run ccleaner it freezes
 

avarice

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May 10, 2006
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Ok - the virus and HDD were the most likely problems - but not neccesarily the only source.

What I would suggest is to open the case up - blow out any remaining dust - turn it on and inspect all the fans - including the power supply fan. (ok - simplistic - but start with the basics of airflow).


you are going to go through a process of simplification and testing. By this - you will remove just about everything you don't really need and test each step.

Next if you have onboard graphics and an addon card - remove the card and switch to onboard. If not - disregard - as you will want some video. Remove all but one stick of memory, only provide power to your C: drive, and remove all other peripheral cards.

You should only have the MB, CPU, Heatsink, Fans, one stick of memory your C: drive, mouse and keyboard attached when you are done.

Start up - and see if you still have this problem. If not - your issue is in something you removed. If it persists - it is in something you still have.

Swap the memory with another stick (law of averages will drive that only one of two should be bad if one is.) and test. If no change - not the memory.

I know this is a bit of effort - but whatever remains is where the slowness is at.
 
Solution

SethJPC

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I had the exact same weird problem... did you do any windows backups onto it? I found that once I had cleared all windows backups my PC was fast again :)
 

avarice

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May 10, 2006
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I love it when a plan comes together - simplifying a situation and isolating the potential issues has worked well for me in the past.

Do what you can to format the drive - also check the SATA port used for each drive - try to make sure that your C: drive is on the SATA1, next is on SATA2, ect. mixing things up has created challenges for me in the past.