lost wireless certificate and get more slower

I have windows xp pro on old toshiba. When first if it was very fast. What I do is use the internet and email and facebook. No games. I have very little knowledge but defraged, run a cleaner regularly, made as much as poss memory space by deleting some photos and I wanted to keep. But laptop even slower per day. I caught a virus at one point and called microsoft who has taken over and deleted many things but still no help. I run avg security. Also think that I accidentally deleted the certificate wireless because when I try to connect I get a message saying that a certificate is not found. I can restore that? I tried to restore the earlier time settings and do work tho has in the past. Rpet insufficient virtual memory. Any help appreciated. Can not afford another laptop or pay someone for sorting.

First of all, let me say you use XP Pro and you are in the Vista forum. You also use Windows to manage your wireless network. Windows requires a certificate that does not exist. To do this: Control Panel, network connections, right click Wireless Network Connection, choose Properties, wireless networks tab to select, double-click your connection in the box, or click once to highlight and select Properties, now choose Authentication tab, uncheck the box enable IEEE 802. 1 x authentication for this network. When this check box is selected in Windows is set to request a certificate. Windows is no longer will request one now. You should now be able to connect. If this isn't the case after back and I'll tell you what else to do. Also, after return and tell the forun if it worked. Good luck

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