Question about Acer Aspire 4720 Notebook

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When I try to play a musical cd it does not always play. It has been like that since I bought it. Now I discover that when I try to install new software it doesn't do any thing. Am I doing something wrong or is there a prolem in the computer? I can hear it turning but not getting any thing.

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  • 468 Answers

It happens if the upper and lower filters are corrupted. By removing both or anyone of the files will resolve the issue. To do so, please follow the below steps (Note:
Please delete the excat entry in the steps below. If you do not find the entries ignore it. Do not delete any other files that will screwup your computer):
1. From the Windows Vista default Start menu, point to All Programs, Accessories, and then click Run.
2. In the Run dialog box, type: Regedit and Click OK.
3. In the User Account Control dialog box, click Continue.
4. In the Registry Editor window, locate and then click to select the following registry subkey:
HKEY_LOCAL_MACHINE/System/CurrentControlSet/Control/Class/{4d36e965-e325-11ce-bfc1-08002be10318}
5. From the File menu, click Export.
6. In the File name dialog box, type: Savedkey, and then click Save.
7. Click the REG_MULTI_SZ data type UpperFilters file, and then from the Edit menu, click Delete. When you are prompted to confirm the deletion, click Yes.
8. Click the REG_MULTI_SZ data type LowerFilters file, and then from the Edit menu, click Delete. When you are prompted to confirm the deletion, click Yes.
9. In the Registry Editor window, from the File menu, click Exit.
10. Shut down Windows® and restart the computer

Posted on Jul 06, 2010

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Posted on Jan 02, 2017

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