windows 7 pc slow installing everything

we have a stand alone windows v7 64 bit workstation that is extremely slow carrying out any installations.

running an exe file or even on close down when installing microsoft updates, it sits ticking away, but with no apparent progress.

the pc seems to work just fine when running applications etc, it's just when we want to install software that we seem to crawl.

when i monitor the performance, i can see it is doing something, but is not taking up all of the bandwidth of the drive or processor.

i removed avg, which i had to do in safe mode, as it crawled in standard mode, but this did not make any difference.

on restarting, it opened in a timely fashion, but the install of avg starts ok, but just sits at the very first part of the progress bar, again without advancing.

i will leave it to run overnight, but there must be something causing this general problem.

can anyone advise how ws go about identifying and resolving this extremely frustrating problem?

many thanks
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nigelbeatsonAsked:
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Spencer SchererConnect With a Mentor Systems AdministratorCommented:
Honestly, if its a possibility, I'd go with a re-image as they take 2 hours or less in general.  If not, you may want to download and run Process Explorer:

https://technet.microsoft.com/en-us/sysinternals/processexplorer.aspx

Maybe this will pick up on something running in the background causing issues.
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JohnConnect With a Mentor Business Consultant (Owner)Commented:
A reinstall definitely solves a lot of issues.

Prior to reinstall.

1. Go to C:\Users\jusername\AppData\Local\Temp and delete temporary files (all that you can). Then run Disk Cleanup (Admin Tools) and select all folders to delete.

2. Run Disk Defrag (Admin Tools). This may take a couple of hours if you have never run it.

3. Do a full scan with your Anti Virus and then with Malwarebytes.
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nigelbeatsonAuthor Commented:
thankyou for your replies.

i will try your suggestions, but i have a feeling that the things suggested are going to be the kind of things that are taking a great deal of time to complete.

re installation is a real last resort as the software and data on this workstation would be pretty time consuming to backup and restore.

many thanks
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JohnBusiness Consultant (Owner)Commented:
Disk defrag requires a couple of hours, but does not require your attention.
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rindiConnect With a Mentor Commented:
What is your PC's hardware?

Test you disk using the disk manufacturer's diagnostic tool. If it shows errors that aren't repairable, replace the disk. Also test the RAM using memtest86+. You'll find both of those tools on the UBCD:

http://mirror.sysadminguide.net/ubcd/ubcd536.iso

I'd also open up the PC and clean out all dust,, make sure all the fans run smoothly, if they don't replace them. Remove the Heatsink from the CPU and thoroughly clean both surfaces. After that re-apply a very small drop of fresh thermal transfer paste to the CPU, then properly and firmly reattach the heatsink.

Sometimes I've also seen your symptoms where the disk manufacturer's diagnostic didn't show any errors, so it may be a good idea to replace the disk even if it looks OK.

If you do need a reinstallation, follow the instructions in my Article below, to speed up the Windowsupdates:

https://www.experts-exchange.com/articles/28629/Windows-7-New-Installation-Windows-Updates-fix-applies-to-windows-2008-Server-R2-too.html
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nigelbeatsonAuthor Commented:
Having tried a lot of things an wasted much time, I ended up doing a complete re install, which resolved the problem.

Many thanks to all.
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