After adding some new hardware devices which I intended to speed up my computer, it is running with some hang ups.
I believe it is a result of DPC's according to process explorer.
Dell Dimension 2400 Celeron 2.4 GHZ Windows XP Home SP3 2GB Ram
I upgraded from 1 GB of ram to 2GB of ram in pairs.
I added a Western Digital 750GB 2.0 External USB drive.
I added an LG 22x Internal DVD Super Multi Rewriter.
When I tried to burn a DVD I noticed high DPC's. But the data was coming from the external drive so I suppose it could have been either.
To install the DVD drive I unplugged my old CD burner which came with the computer and plugged in the new DVD drive. I set the master/slave switch to the same setting as the previous CD drive had been on. I'm assuming it was master because the old CD drive was my primary one.
I did not have drivers for either of these devices, XP recognized them and installed. I also pulled out and reseated the memory and cables for the drives to make sure that was not the problem.
Also have the following under disk drives in Device Manager:
HP photosmart 7600 USB Device
(Standard disk drives)
Driver verison 5.1.2535.0
Don't know why this is listed as a USB device under disk drives. It's a printer that has connections for memory cards etc, but I never use it as a drive and when I click it in exploer it always says insert a disk.
It's annoying me a bit as it tries to map itself as Drive E: which I want what I want the Western Drive to be mapped as.
I have been uninstalling it and then remapping the Western to fix the problem in the mean time.
I have run several virus scans and posted HJT logs so the problem is not malware. I am leaning more towards the WD drive causing the problem as the DVD drive is rarely in use. I started the computer without the Western attached but it still is not running 100%. Upon plugging the Western in the DPC's spiked to about 50% before settling down when idle. When I extract a ZIP onto the Western drive DPC's spike from 16-25.
I installed RATT but have no idea how to interpret results or narrow down the correct results. How can I narrow down which device is causing the problem?
Thanks a lot.
Edited by kabledesigns, 26 December 2008 - 08:32 PM.