You can no longer access the CD drive or the DVD drive or drives not seen in my computer

Delete LowerFilters/UpperFilters
Click Start, click Run, type regedit, and then click OK. Registry Editor starts.
Step 2: Delete the UpperFilters registry entry
1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE.
2. Expand SYSTEM, and then expand CurrentControlSet.
3. Expand Control, and then expand Class.
4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}.
5. In the right pane (topic area), click UpperFilters.
Note An UpperFilters.bak registry entry may also appear. To delete the UpperFilters registry entry, you must click UpperFilters and not UpperFilters.bak.
6. On the Edit menu, click Delete.

try doing this
click start>control panel>administrative tools>services>double click on imapi >click drop down box that will put the service into automatic instead of manual then press run.

you can also try this:
Step 1: Start Registry Editor loadTOCNode(3, 'resolution'); Click Start, click Run, type regedit, and then click OK. Registry Editor starts.
Step 2: Delete the UpperFilters registry entry loadTOCNode(3, 'resolution'); 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click UpperFilters.

Note An UpperFilters.bak registry entry may also appear. To delete the UpperFilters registry entry, you must click UpperFilters and not UpperFilters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the UpperFilters registry entry: Are you sure you want to delete this value?The UpperFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey.

Note Do not exit Registry Editor. You must have this program for the next step.
Step 3: Delete the LowerFilters registry entry loadTOCNode(3, 'resolution'); 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click LowerFilters.

Note An LowerFilters.bak registry entry may also appear. To delete the LowerFilters registry entry, you must click LowerFilters and not LowerFilters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the LowerFilters registry entry: Are you sure you want to delete this value?The LowerFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey. 8. Exit Registry Editor.

Log on to Windows by using an account that has administrator rights and permissions. Then, follow these steps. Step 1: Start Registry Editor loadTOCNode(3, 'resolution'); Click Start, click Run, type regedit, and then click OK. Registry Editor starts. Step 2: Delete the UpperFilters registry entry loadTOCNode(3, 'resolution'); 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click UpperFilters.

Note An UpperFilters.bak registry entry may also appear. To delete the UpperFilters registry entry, you must click UpperFilters and not UpperFilters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the UpperFilters registry entry: Are you sure you want to delete this value?The UpperFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey.

Note Do not exit Registry Editor. You must have this program for the next step. Step 3: Delete the LowerFilters registry entry loadTOCNode(3, 'resolution'); 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click LowerFilters.

Note An LowerFilters.bak registry entry may also appear. To delete the LowerFilters registry entry, you must click LowerFilters and not LowerFilters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the LowerFilters registry entry: Are you sure you want to delete this value?The LowerFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey. 8. Exit Registry Editor. Step 4: Restart the computer this should solve your problem

1.go to bios by pressing f2 key on dell logo
set num lock caps lock scroll lock on
press alt + e
press alt + f
press esc twice

2.
Step 1: Start Registry Editor loadTOCNode(3, 'resolution'); Click Start, click Run, type regedit, and then click OK. Registry Editor starts.
Step 2: Delete the UpperFilters registry entry loadTOCNode(3, 'resolution'); 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click UpperFilters.

Note An UpperFilters.bak registry entry may also appear. To delete the UpperFilters registry entry, you must click UpperFilters and not UpperFilters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the UpperFilters registry entry: Are you sure you want to delete this value?The UpperFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey.

Note Do not exit Registry Editor. You must have this program for the next step.
Step 3: Delete the LowerFilters registry entry loadTOCNode(3, 'resolution'); 1. In Registry Editor, expand My Computer, and then expand HKEY_LOCAL_MACHINE. 2. Expand SYSTEM, and then expand CurrentControlSet. 3. Expand Control, and then expand Class. 4. Under Class, click {4D36E965-E325-11CE-BFC1-08002BE10318}. 5. In the right pane (topic area), click LowerFilters.

Note An LowerFilters.bak registry entry may also appear. To delete the LowerFilters registry entry, you must click LowerFilters and not LowerFilters.bak. 6. On the Edit menu, click Delete. 7. When you receive the following message, click Yes to confirm the deletion of the LowerFilters registry entry: Are you sure you want to delete this value?The LowerFilters registry entry is removed from the {4D36E965-E325-11CE-BFC1-08002BE10318} registry subkey. 8. Exit Registry Editor.
Step 4: Restart the computer loadTOCNode(3, 'resolution');

Download the driver from Sony for this product that matches your operating system