Introduction

A corrupt PID can prevent a USB device from working correctly in Windows. Removing the PID key and reinstalling the software for the device may resolve the issue. Follow the steps below in the order given to remove the PID keys.

Step one: Make a backup copy of the Windows Registry

Create a backup copy of the Registry by following the steps below:

1. Click Start , and then click Run . The Run window will open.
2. In the Open box, type REGEDIT and then click OK . The Registry Editor window will open.
3. Open the Export Registry File window.
   • In Windows 95, 98, Me, 2000, click Registry , and then click Export Registry File . The Export Registry File window will open.
   • In Windows XP, click File , and then click Export Registry File . The Export Registry File window will open.
4. In the Save in box, select Desktop .
5. In the File name box, type Backup to name the file.
6. In the Save as type box, select Registration Files .
7. In the Export range area, select All .
8. Click Save . The Export Registry File window will close and save a copy of the Registry on the Desktop.
9. With the Registry Editor still open, go to Step 2: Remove the Photosmart Registry keys.

Step two: Remove the Photosmart Registry keys

Follow the steps below to remove the Photosmart Registry keys.

1. Open the Enum registry key.
   • In Windows 2000 and XP, follow the steps below:
     1. Click the plus (+ ) next to HKEY_LOCAL_MACHINE .
     2. Click the plus sign (+ ) next to SYSTEM .
     3. Click the plus (+ ) next to CurrentControlSet .
     4. Click the plus sign (+ ) next to Enum .
   • In Windows 95, 98, and Me, follow the steps below:
     1. Click the plus sign (+ ) next to HKEY_LOCAL_MACHINE .
     2. Click the plus sign (+ ) next to Enum .
2. Click the plus sign (+ ) next to the USB .
3. In the table below, locate the PID number for the Photosmart product you want to remove.
4. Then in the Registry Editor, select that PID key and press the Delete key on the keyboard.
5. Close the Registry Editor.
6. Uninstall the driver software for the HP Photosmart product.
7. Restart the computer.
8. Reinstall the driver software for the HP Photosmart product.

Resolving an “Unable to Delete Key�? Error Message in Windows 2000 or Windows XP

When attempting to remove a key, the following message may appear: Unable to Delete Key . If this occurs, check your permissions.

For Windows XP, follow the steps below:

1. Right-click the key to be deleted.
2. Left-click Permissions .
3. In the Permissions window, click each of the names in the Group or user names section one at a time. Verify that Allow Full Control is selected. Click the box to add a check mark if necessary.
4. Click Apply , then click OK .
5. Select the key to be removed and press the Delete key on the keyboard.
6. Close the Registry Editor window.

For Windows 2000, follow the steps below:

1. Click Start , and then click Run .
2. In the Open box, type REGEDT32 and then click OK .
3. Highlight the key to be removed.
4. At the top of the REGEDT32 Window, click Security .
5. Click Permissions .
6. Under Allow, click Full control . In the Permissions window, click each of the names in the Group or user names section one at a time. Verify that Allow Full Control is selected. Click the box to add a check mark if necessary.
7. Click Apply , and then click OK .
8. Click the key to be deleted.
9. At the top of the window, click Edit .
10. Click Delete .
11. Close all Registry Editor windows.

PID keys for HP Photosmart products

Both VID and PID keys are listed under USB. All HP VID keys are 03f0.

All HP devices have a Vendor Identification (VID) of 03f0. The Product Identification (PID) is listed on the same line as the VID. For example, the correct key for the Photosmart 120 camera would be VID_03f0&PID_4002. The PID is unique for each USB device.

Product	PID key(s)
120 digital camera	PID_4002, 6502
C500 digital camera	PID_6002
215 digital camera	PID_6202
315 digital camera	PID_6102
318 digital camera	PID_4002, 6302
320 digital camera	PID_4002, 6602
430 Series digital camera	PID_4002, 7202
612 digital camera	PID_4002, 6302
618 digital camera	PID_4002, 4102
620 digital camera	PID_4002, 6802
635 digital camera	PID_4002, 7102
715 digital camera	PID_4002, 6402
720 digital camera	PID_4002, 6702
733 digital camera	PID_4002, 6C02
735 digital camera	PID_4002, 6A02
812 digital camera	PID_4002, 4202
850 digital camera	PID_4002, 4302
912 digital camera	PID_4002, 4102
935 digital camera	PID_4002, 4402
945 digital camera	PID_4002, 4502
R507	PID_6e02
R607	PID_6d02
R707	PID_6b02
R717	PID_7602
R725	PID_8402
R727	PID_8502
R817	PID_7702
R818	PID_7e02
M22	PID_7502
M305	PID_7202
M307	PID_7302
M407	PID_7402
M417	PID_7802
M425	PID_8002
M517	PID_7902
M525	PID_8102
E317	PID_7d02
E217	PID_7c02
E327	PID_8b02
P1000 printer	PID_3002
P1100 printer	PID_3102
100 printer	PID_3802
130 printer	PID_3902
230 printer	PID_3502
325 printer	PID_1202
330 printer	PID_1602
375 printer	PID_1302
380 printer	PID_1702
420 printer	PID_1502
470 printer	PID_1802
1115 printer	PID_3402
1215 printer	PID_3202
1218 printer	PID_3302
1315 printer	PID_3602
7150 printer	PID_3a02
7350 printer	PID_3c02
7450 printer	PID_b802
7550 printer	PID_3e02
7260 printer (rear USB)	PID_b002
7260 printer (front USB)	PID_b102
7660 printer (rear USB)	PID_b202
7660 printer (front USB)	PID_b302
7760 printer (rear USB)	PID_b402
7760 printer (front USB)	PID_b502
7800 printer	PID_c002
7960 printer (rear USB)	PID_b602
7960 printer (front USB)	PID_b702
8000 printer	PID_c202
8150 printer	PID_ba02
8250 printer	PID_c102
8450 printer	PID_bb02
8700 printer	PID_bc02
S20 photo scanner	PID_0102
1000 scanner	PID_020C