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ameriaadminFlag for Armenia

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windows 7 work slowly

hello experts
my windows 7 workstation works slowly.
i have installed a new OS a few month ago. there are no any important errors in event viewer,  my hardware is  
CPU   Intel Core i3-2130 3.4 GHz
RAM   4Gb
system type   64-bit operating system
in Windows Task Manager Performance tab I have 0-3% CPU load and 2Gb Ram load, but pc works slow.
please advice what can i do ?
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awawada

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What hard drive do you have?

What programs are running on your system at startup (e.g. your antivirus)?
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Robert Retzer
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I would run ccleaner, and with this tool you can do a number of things such as clean temp files, clean the registry, turn off startup items that run in the background, etc, it is a free program that you can download. I would run a windows defrag to see how fragmented the files are. The more fragmented the files are the slower the computer will run.
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at start up  i have run  Symantec Endpoint Protection
on HDD Resource Monitor show up to 10% usage I/O
i will try to do diagnostic testes. thanks.
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there are four ways for you to go -

CPU
RAM
Disk
Network

out of which you already checked CPU and RAM. Also check for disk I/O or any network connections. Other than this local firewall or antivirus might be a culprit (you might want to disable them for some time and check the performance.)
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i have replaced the video card and all is ok now.
thank you all for your response.
ameriaadmin--Glad to have helped.