petergidden
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Can't disable DMA for CD-ROM
I have a Compaq Deskpro 3255MMX. IDE CD-ROM as originally supplied. After reading a magazine article, i went to properites of my CD-ROM and ticked the DMA box.
Now when i boot up the whole machine freezes just after drawing the icons on the desktop. If i disconnect the CD-ROM, no problems.
I've tried removing the device in My Computer, but no good.
I can't uncheck the box because the system freezes before i get a chance to open my computer.
I tried booting into Safe Mode and doing it there, but i then get a message saying unable to update registry.
How do i get my CD-ROM back?
Now when i boot up the whole machine freezes just after drawing the icons on the desktop. If i disconnect the CD-ROM, no problems.
I've tried removing the device in My Computer, but no good.
I can't uncheck the box because the system freezes before i get a chance to open my computer.
I tried booting into Safe Mode and doing it there, but i then get a message saying unable to update registry.
How do i get my CD-ROM back?
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Try running scanreg /fix at the command prompt. Just my 2¢
ASKER
Well Sorgie, you got it, sort of..... Really weird this, but i did as you said, rebooted without the CD-ROM, then switched off and reconnected. Same problem, complete freeze up. Tried again, but same result.
I then tried an old two speed CD-ROM from my other machine, and it worked OK.
Switched off, disconnected, and rebooted. Deleted the entry for the old NEC, and switched off. Reconnected my Panasonic CD-ROM that's giving all the trouble and hey presto, its all OK.
No idea how or why it worked but then i guess that's one of the pleasures in life that Uncle Bill has supplied me with.
You get the points!
I then tried an old two speed CD-ROM from my other machine, and it worked OK.
Switched off, disconnected, and rebooted. Deleted the entry for the old NEC, and switched off. Reconnected my Panasonic CD-ROM that's giving all the trouble and hey presto, its all OK.
No idea how or why it worked but then i guess that's one of the pleasures in life that Uncle Bill has supplied me with.
You get the points!
ASKER