network lost

 When I start my computer it can connect to my local area network after 1-3  hours it can not connect to my local area net work if I restart the computer it will connect a gain it come from soft ware or hardware problem
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sirbountyConnect With a Mentor Commented:
Could be a failing Network adapter...
But, it could also be a setting that needs adjusting:

1. Click Start, click Run, type regedit (Windows 2000 or Windows Server 2003) or type regedt32 (Windows NT 4.0), and then click OK.
2. Locate and then click the following key in the registry:


3. In the right pane, click the autodisconnect value, and then on the Edit menu, click Modify. If the autodisconnect value does not exist, follow these steps:
4. On the Edit menu, point to New, and then click REG_DWORD.
5. Type autodisconnect, and then press ENTER.
6. Click Hexadecimal.
7. In the Value data box, type ffffffff, and then click OK.

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