DPC (Deferred Procedure Calls)

Originally posted by pblumo with kernrate ? (2003 ressource kit)

well the problem will only occur when im online with my isdn-usb-modem.
so what do i learn from that? that i should update its driver?

Hmm...., I can now count to at least 6 people with Dell Dim 8400/Geforce 6800, all having this issue. Interesting that Dell support won't touch it! To me, they just refer to the software support centre (that you have to pay!).

I did try and update to the latest chipset drivers from Intel, but without success. I was thinking that perhaps it was the PCI express drivers, rather than the graphic card drivers themselves that was the issue, but I guess not.

I have become very, very tired of this thing now, so I have bought a new graphic card, an ATI Radeon card this time. I will install it tomorrow and let you know if it solved the problem.

My boyfriend has desasbled windows logon and now he can't logon.
When he loged on windows automaticly logoff.
Safe mode doesn't help or loging as Administrator or anything I try.
I just need information what hapends when something is disabled.
How can I turn it on again?
Is there any possibility that I can do it from DOS?

Please help

thanks
p.s. OS is windows service pack 2

Ran RATTV3 on my system last night. It filtered through and showed that videoprt.sys is taking an excessive amount of time on its DPCs. Where all the other drivers had DPC execution time on the order of microseconds, videoprt.sys had execution times from microseconds to tens of milliseconds. So yes, I would say the video card is the culprit.

I told Dell about this last night; I don't expect them to do anything useful. The technician referred me to customer care to see if I could get an exchange. Before that, I might try changing out the video card myself.

I called Dell (lack of) support last night.  Beddy Beddy good!  The woman I talked to at least said dell now acknowledges the problem of 8400 systems with the geforce 6800 card.  They offered to replace the 6800... with another one!  Dunno how that's going to help.  I agree it is the geforce driver causing all the DPC's that periodically clog the system. The sysinternals Process Explorer tells you for sure that the problem is DPC's - question is where they are coming from.  I have tried several versions of the driver, both from Dell and from nVidia's site, no luck.  Last night they told me to go into msconfig and turn off the Load Startup Items in the Selective startup on the General tab, then turn on only the essential services on the Startup tab.  That got me a few hours respite, but now it's back with a vengeance.  I just ordered an ATI Radeon X300SE 256MB PCI Express.  A lot less card I know, but only $70 on ebay and that should answer the question for sure if it is the nvidia card.  It'll be here in 2-3 days... will let y'all know...   (Keep pounding on Dell!)