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Windows 7: Disk IO basically stops and system 'freezes'

12 Aug 2009   #1

Disk IO basically stops and system 'freezes'

EVGA x58
i7 920 stock
OCZ Platinum Memory (6G)
2 vertex 30s in RAID0/FW 1.3 (OS drive)
1 Velociraptor 150 on SATA
Win 7 build 7100
4TB in external 4sata box (JBOD)
fatilaty1 pro soundcard
Radeon 470ish card (newer version)

I have been running my machine without any problems for a couple of months, then it started to slow down - or more specifically I would initiate the move of a 10G file from one external (esatabox) to another (same box). Transfer will start at 60M/sec and run for a short time, then all disk IO will stop. Status bar is still 'pulsing' but not moving. After 10-20 minutes it will resume the move but now the transfer rate is 2M/s.

Pull up taskmgr and look at performance shows zero disk IO (it doesn't even show any disks).

Checked RAM
Created a backup image of the OS using the win7 backup, created a recovery disk, booted to recovery disk and restored the image (I didn't change any of my disk settings i.e. raid to ide). Seemed to restore ok, but problem persists.

Anyone have any clue??? Or could anyone point me to something in Win7 that may help diagnose this problem?


My System SpecsSystem Spec
12 Aug 2009   #2


If it's not a problem for you, a fresh install is always good :)
My System SpecsSystem Spec
12 Aug 2009   #3


While that may work, I'd really like to know the cause of the problem.

Is there something in Win7 that I can look at to find clues?
My System SpecsSystem Spec

12 Aug 2009   #4
Microsoft MVP


I'm not familiar with the tool, but there is a Performance Monitor tool for Vista that should work with Win7 (google for it).

Also, there's lot's of performance indicators in the Event Viewer - but that's a matter of looking through all of them until you find the right one.

I'd suggest checking the Action Center, perfmon /report, perfmon /rel, and the Event Viewer for more details.
My System SpecsSystem Spec

 Disk IO basically stops and system 'freezes'

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