New
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Do you have a blank DVD or flash stick to burn or write the latest official installer ISO for your licensed version to disk or stick? This is in the first two steps of Clean Reinstall - Factory OEM Windows 7 .
Confirm this is your exact PC model and the Network driver shown there when you expand it is the same one in your Device Manager under Network adapters>Wireless. If so download it and save in your backup in case it isn't provided during install so you can get online on your network: Software & Driver Downloads HP Pavilion p6-2020sc Desktop PC | HP® Support.
Then expand Drivers-Original and confirm in Device Manager that the Realtek Family driver is the installed Ethernet driver for your PC. It may be better to plug in via wire during install because then there is a 70% chance the driver will be provided and start up read to connect. With wireless only there is only a 50% chance.
All other drivers should be provided during repeated rounds of Important and Optional Windows Updates I will do for you.
Here is the TeamViewer Download . If you want to install it on the other laptop I can walk you through the physical install steps when you're ready. You only need to send me a private message with the ID and password and leave it open on desktop.