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Computer Freezes every 20 secs for 7 secs

I have this one computer two days ago, that freezes up every 20-22 seconds and stays frozen 5-7 seconds. Very annoying. I have ran TrendMicro Scan. No Change. Removed TrendMicro thinking it did it. No Change. Installed MS Security Essentials did scan. No Change. Watch CPU/Processes/Services, nothing changes at 20 secs. The only thing I noticed was at 18 sec. Network Performance Spikes and floods the little green square, then about 4 secs into the freeze all network stops, and the freeze stops about 2 to 3 secs after. I have ran malware bytes and McAfee free download tools. Nothing, can't find nothing, can't stop anything.
Oh, I disconnected from wireless, and about every half sec the blue circle blinks and disappears immediately.

Any suggestions? Solutions? Tools I should try? Thanks in advance.

JAN PAKULA

try malwerbytes

http://www.malwarebytes.org/products/malwarebytes_free

search and destroy

http://www.safer-networking.org/en/index.html

do
run
cmd (run as admin)
sfc /scannow

check your ram with memtest 86
disable network cards in device manager
try clean boot
http://support.microsoft.com/kb/331796

check eventlog for errors (every 20 sec)
what is your main(system) hdd operation mode dma or pio?

JAN MA CCNA

JAN PAKULA

or you can investigate userenv log yourself if you cant post log file on e-e

Interpreting Userenv log files

http://technet.microsoft.com/en-us/library/cc786775(WS.10).aspx

JAN PAKULA

how to enable logging
http://support.microsoft.com/kb/221833

ASKER CERTIFIED SOLUTION

younghv

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suttons27

ASKER

Thanks for the responses.
@janpakula
1. Already Tried MalwareBytes - came back Clean
2. Will try suggestions and look at eventlog
3. System 2 yrs old, so I'm guessing DMA (not sure though), its Windows 7, quad proc, 4 gb ram

@younghv
1. Network computer, she won't let me unhook from network (She is the owner) I can barely even get on the computer to troubleshoot, in her eyes, its just annoying but she can still work. So I have to wait till she is in meetings
2. Yes, I have stopped processes that seemed unnecessary (did not use a program), actually sat down with user for about 30 mins and uninstalled unnecessary programs as well.

Will try your suggestions tomorrow...thanks to both of you for your responses.

younghv

"Yes, I have stopped processes that seemed unnecessary (did not use a program),..."

You really want to use a program such as "RogueKiller" to identify and stop the processes. These programs are written by people (such as Tigzy) who are way at the end of spectrum of ability for this kind of work.

Follow the steps outlined in the Articles and post back the logs that are generated.

JAN PAKULA

you could also try process explorer to see what is going on in the system (disable all unnecessary programs before you ran procmon)

http://download.sysinternals.com/Files/ProcessMonitor.zip