Enable DMA in Windows XP Vista and Windows 7 to speed up the system

Direct memory access (DMA) is a feature of modern computers and microprocessors that allows certain hardware subsystems within the computer to access system memory for reading and/or writing independently of the central processing unit.
DMA is used for transferring data between the local memory and the main memory. Computers that have DMA channels can transfer data to and from devices with much less CPU overhead than computers without a DMA channel.

This is especially useful in real-time computing applications where not stalling behind concurrent operations is critical. Another and related application area is various forms of stream processing where it is essential to have data processing and transfer in parallel, in order to achieve sufficient throughput.
Now, know how to Enable Direct Memory Access (DMA) in order to speed up your system.

You must be logged on as an administrator to perform these steps.

Direct memory access (DMA) is usually turned on by default for devices such as hard disks and CD or DVD drives that support DMA. However, you might need to turn on DMA manually if the device was improperly installed or if a system error occurred. Perform the following steps to do this.

First Open Device Manager.

• Right-click on My Computer, select Properties
• Select the Hardware tab
• Click the Device Manager button

For Windows XP

1. Double-click IDE/ATAPI controllers
2. Double-click on the Primary IDE Channel
3. Click on the Advanced Settings tab (as shown in figure) The tab may or may not be available for each option. It is only available in Primary and Secondary Channels.
4. Set the Transfer Mode to "DMA if Available" both for Device 1 and 0
5. Click OK
6. Perform the same operation for other items in the list, if applicable.

For Windows Vista and Windows 7

1. In the left pane, click the plus sign next to IDE ATA/ATAPI controllers to expand it.
2. For each icon that has the word Channel as part of its label, right-click the icon, and then click Properties.
3. Click the Advanced Settings tab, and then, under Device Properties, select the Enable DMA check box.
4. Click OK.

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How to Turn On or Enable Hibernation in Windows 7

Note Windows 7 doesnt support Hibernate on System with Ram of 4GB or more.

To Turn On or Enable Hibernation.

1. Click on Start.
2. Type cmd. Now instead of pressing Enter, press Ctrl+Shift+Enter to run cmd with administrator rights.
3. or Browse to C:WindowsSystem32
4. Right Click on cmd.exe and select Run as Administrator
5. Type powercfg /hibernate on and hit enter.
6. Now go to Control Panel >> System and Security >> Power Options.
7. Click on Change plan settings link of the active power plan.
8. Click on Change advanced power settings link.
9. Expand the Sleep tree.
10. In the drop down box of Allow Hybrid Sleep, select Off as new setting to disable and turn off Hybrid Sleep.

To Turn off or Disable Hibernate.

1. Click on Start.
2. Type cmd. Now instead of pressing Enter, press Ctrl+Shift+Enter to run cmd with administrator rights.
3. or Browse to C:WindowsSystem32
4. Right Click on cmd.exe and select Run as Administrator
5. Type powercfg /hibernate off and hit enter.

Now, to Set the power button option as Hibernate,

• Click on Start.
• Right-Click on the Power Button.

• Click on Properties.
• Drop-down the Power Button Action Box.

• Select Hibernate.
• Click on Apply and then Click on OK.

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How to enable Press Ctrl Alt Del Secure Logon On Windows 7 or Vista

Method 1: User Accounts Advanced Settings

1. Click start and type netplwiz into Start Search box, it opens the User accounts dialogbox.
2. Go to Advanced Tab.
3. Under “Secure logon” section, select and check the checkbox for Require users to press Ctrl+Alt+Delete option
4. Click apply and OK.

Method 2: Registry editing.

1. Click start and type netplwiz into Start Search box, it opens Registry editor.
2. Navigate to the following registry key:HKEY_LOCAL_MACHINESoftwareMicrosoftWindowsCurrentVersionPoliciesSystem
3. In the right pane, double click on DisableCAD registry key value, and set its value data to 0

Method 3: Using Group policy.

1. Click on Start button, and type secpol.msc into Start Search box, and hit Enter to open the Local Security Policy Editor.
2. Navigate to Security Settings >> Local Policies >> Security Options.
3. In the right pane, double click on Interactive logon: Do not require CTRL+ALT+DEL.
4. Select and set the radio button of Disabled.
5. Click Apply and OK.

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