Hi Marcus,

In addition to Pegasus' excellent advice, here is some documentation on the
PIO-DMA issue:

http://www.microsoft.com/whdc/device...e/IDE-DMA.mspx

http://www.michna.com/kb/WxDMA.htm

--
HTH,
Curt

Windows Support Center
http://aumha.org/

"Pegasus (MVP)" <I.can@fly.com> wrote in message
news:uXm$9gVYHHA.1216@TK2MSFTNGP03.phx.gbl...
>
> <holysmokes99********.com> wrote in message
> news:1173338439.816158.98870@v33g2000cwv.googlegro ups.com...
>> Lately my computer has been having real trouble playing videos
>> (extremely jerky), and even scrolling through a long list of files in
>> a directory in windows explorer (jerky scrolling). I ran some tests
>> using HD Tune and HD Tach to see if it was a hard drive issue, and low
>> and behold the read speed is terrible. I am getting a maximum read
>> rate of about 4MB/Sec. My drive is a 120GB Maxtor 4R120LO. Is there
>> anything I can do to fix this? I defragged it but no difference. Can
>> it be saved?
>>
>> Thanks
>> Marcus
>
> Check if DMA is enabled for your disk: Control Panel / System /
> Device Manager / Primary IDE Channel / Advanced Settings /
> Transfer Mode.
>
> You should also check the Event Viewer (eventvwr.exe) for
> relevant events.
>
>