Quick Halts/Freezes than back to normal

[too]

Two PCs here, one with Windows Business other with Ultimate have the same problem.
They don't crash or completely stop, nor go slow along the day. They just give me several small halts during the entire operation.
Everything is up to date, during stress test no problems are noticeable but (one PC is overclocked by 40%, other is stock).
Full virus check, nothing found.
Can't get why this is happening here.
Some help please, this is really driving me crazy.
Thanks!

 

[Arc]

Hello too. We need your MSINFO.nfo files, for both the PCs.

upload your MSINFO32.nfo file.

1. Click on the start button
2. Type "msinfo32" (without quotes) in the search bar of the start menu, click the resulting link. It will open the System Information window.
3. File>Save. In the "File Name" filed, put "MSINFO32" (without Quote), give the save location to desktop, and click the "save" button.
4. Give the time for processing, it will save a .nfo file on your desktop.
5. Zip it, and upload it following the instruction.

Let us know.

 

[too]

Here it's one: Download MSINFO32.7z from Sendspace.com - send big files the easy way
I'll do the other one asap.
This is my laptop's info, with Enterprise, same issue :-(

 

[Arc]

Unfortunately the file you uploaded are corrupted.

 

[too]

Sorry about that, strange that here no error showed up.
This is from the other PC: Download MSinfo32.zip from Sendspace.com - send big files the easy way
Thanks.

 

[Arc]

Upload it here.
http://www.sevenforums.com/tutorials/9733-screenshots-files-upload-post-seven-forums.html