Answer Best answer as chosen by user kahakura
XP Bug: DMA to PIO
Possible the hard drive data transfer setting was changed by XP from Ultra DMA Mode 5 to PIO. XP will do this when it sees 6 consecutive CRC errors coming from the hard drive. PIO data transfer is much slower than DMA.
To check for this: Right-click My Computer>select Properties in the drop-down list>Hardware Tab>Device Manager>click the plus sign by IDE ATA/ATAPI controllers>highlight Primary IDE channel>right-click and select Properties. Next, select Advanced Settings Tab.
Look at Transfer Mode:
It should say: DMA if available
Look at Current Transfer Mode:
It should say Ultra DMA Mode 5
If it says PIO instead of DMA if available, choose the drop-down and change it back to DMA if available and reboot.
If the above says PIO, then that is one of your problems. Check the DMA setting again after you reboot.
http://winhlp.com/node/10 covers the reasons why XP will revert to PIO data transfer and how to fix it.
Stay away from Glary Utilities, snake oil at best, operating system damage at worst.
Start>Run>enter the word cmd in the Run box>hit enter
Once in the cmd window use the following run command: chkdsk C: /R/V >press Enter You can copy/paste this command into the cmd window if you like.
chkdsk is a built-in Windows repair utility made just for repairing hard drive errors and file system repair.
Windows will say it cannot lock the drive and will run chkdsk the next time you restart. Reboot and (you must) allow chkdsk to run to completion. Failure to allow chkdsk to complete will result in corrupted system and other files; the likely result of not being patient and allowing completion of chkdsk is that your computer will not boot to Windows anymore. If it takes 12 hours to run, so be it. Once you start, let it finish. Your computer will reboot automatically when it is done.
Maintenance: When was the last time your system was cleaned of accumulated dust?
IMPORTANT: Do not use a vacuum cleaner to remove dust inside. Use compressed air used for computers to blow all the dust out, preferably outside the house and use a static wrist strap to ground yourself to the computer when you are cleaning it out. Reason for this is because static electricity is dangerous to computer hardware and the vacuum cleaner will generate more than the 30 volts required to damage sensitive electronic parts inside.
If you really do not want to do all of the above, then it is time to back up all your important personal files and think about getting a new computer. You then can transfer your files to the new system.
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