Checking IDE Transfer Mode To Make Your PC Faster You've done everything you can to get your computer to be fast as before. You have to use all the tools available to save hard disk space, defrag, get rid of useless applications, you have done all you can but your computer is still running slow. What Happened? Apparently, if Windows had met six or more CRC or timeout errors, it would have a "hard drive attack" and slow down for the Secondary IDE PIO mode settings. By turning off your computer with the power button will also cause this problem. How to Fix? Go to Device Manager (accessible through the Windows Control Panel, double-click the System icon, click the Hardware tab, then the Device Manager button) Expand IDE ATA / ATAPI controllers entry. Double click on the first entry IDE Channel. This is where the problem seems to happen. If you do not find here, check out the other entries by the same method. Click on the Advanced Settings tab and see if the Current Transfer Mode reads "PIO Mode" and whether the Transfer Mode reads "DMA if available". If not, set the Transfer Mode to PIO only. Click "OK". Double click on the first IDE Channel entries again, click on the Advanced Settings tab, and change the transfer mode from "PIO only" to "DMA if available". Click "OK". Once again, double click on the first IDE Channel entry and click on the Advanced Settings tab. Now Current Transfer Mode should read something like Ultra DMA Mode 5. Click 'OK', restart your computer and see how it goes much faster.