I have had issues with this Acer Aspire ever since I did a clean install of windows 7 pro. My user is an Administrator, but in order to use my payroll program that requires a certificate, I have to actually log in as Administrator. This is a personal machine, but if I stay home from work, I inevitably receive "urgent" calls with questions and I need to be able to log in to my ADP Portal. That isn't the only issue. I am currently struggling to even open the network and sharing center. I read in a microsoft forum to try going to computer management and doing some things there. I can't even get that far. I get the error: "MMC cannot open the file C:\Windows\System32\compmgmt.msc. This may be because the file does not exisst, is not an MMC console, or was created by a later version of MMC. This may also be because you do not have sufficient access rights to the file." I am also not able to access drives via VPN or connect to a domain. I have also lost my wireless access at home (probably not related, but equally as frustrating!). Any ideas would be of great help.