H.T.F.C.

With all your normal peripherals attached check both the bandwidth and
power consumption on your USB Root Hubs and controllers. It seems
like you've got a overload of some type that is causing the machine to lag.

"Riskman" <Riskman@discussions.microsoft.com> wrote in message
news:7FD3D84B-B292-4116-84A5-8235510412A0@microsoft.com...
>I am working on a Dell OptiPlex GX280 that up till last week worked fine
>(~3
> years). 1GB RAM, 2.8GB Pentium, 80GB HDD SATA, CD-RW, XP SP2. Is a
> network
> workstation. Virus & malware signatures updates hourly. Has decent
> firewall. Recently had added second 512MB RAM strip, but ran with no
> issues
> for weeks following. Run MS Updates routinely, but not yet loaded XP SP3
> (it
> was not yet released at time hang/freeze issue began). Has suddenly begun
> to
> hang/freeze at about 2-3 minutes post log-in. Gives no warning, no error
> messages, no error beeps, continues all green lights on back panel.
> Initially reset to earlier restore point with no positive effect. Then
> did
> repair of OS with no positive effect. Ran Dell Diagnostics which found no
> hardware issues - all tests passed. Specifically retested Memory and HDD
> and
> all still passed those further diagnostics. Have tested USB keyboard and
> USB
> mouse separately and both are fully functional. Ultimately reformatted
> HDD
> and did clean install, but still continues to hang/freeze at about 2-3
> minutes post log-in. Can boot to CD and during lengthy OS repair or
> install
> there was no hang. Can boot to Safe Mode and device will eventually
> hang/freeze at about 10-12 minutes post log-in. When hang begins, red
> light
> on optical mouse flickers (slow at first then increases to rapid, then
> suddenly stops); also during this, audio begins to crackle and similarly
> increases in pace, then stops same as mouse optic light. Did find some
> info
> @ MS regarding an "interrupt storm" but the prescribed "fix" for that did
> not
> alter my issue in any way. Presently the GX280 still hangs/freezes and
> nothing I've done has resolved the issue.
>
> Has anyone suffered through this type of problem before, and how did you
> ultimately resolve it?