My 7526 did not show the SD card or the USB stick. The flash drive cannot be opened. It works before, how do I get it back.

Your system OS is probably messed yp and you will need to re-flash your system. See my TIP at:

http://www.fixya.com/support/r7350901-fix_synet07526_wifi_flashing

It is looking for apassword (WiFi Network Key) You have to double click on the little computericon down in the right tool bar area, the one with the two side radiating arcs,and possibly has a small red X under it. The red X indicates that it is NOTconnected. When you double click on that icon a window called RT28701 opens up,then you click on Wireless Information tab, then you cursor down to the name ofyour WiFi and high light it and click the connect box. Then another windowopens up called Network Properties. Uncheck "The key is providedautomatically" box. This will allow you to type in your "NetworkKey", the password that protects your network from outsiders. This"KEY" was set up when you installed the router on your servercomputer. If this does not work at first, turn the machine over on it's backand using a toothpick, insert it into the little hole about an inch diagonallyfrom the right corner of the data plate, this will re-load a new copy ofeverything including the WiFi RT28701 driver. Some times thisdriver gets confused. See my TIP at: http://www.fixya.com/support/r7350901-fix_synet07526_wifi_flashing AdditionalInformation When I try to signon with the red X showing, I get "The page cannot be displayed If I thendouble click on the icon down in the right corner I elucidated above, RT28701opens up to "Internet Protocol (TCP/IP) with all zeros in the IP addressfield, and Subnet Mask, with no entries in the default gateway. That is a clueto me that the automatic sign on has not found a viable network, or needssomething else. If I then click on Wireless Information tab, the list ofavailable networks, appear in the box. The machine keeps trying to associate myprevious entered name site with my preferred site and tells me the signal isgood, but it cannot link up. This is a signal to me that it has lost my NetworkKey or that the softwarehas failed or both. I then click on advance and delete my preferred network andhit OK, this will force the software to ask me for my network again, and noticethat the preferred is missing. I click on the name of my network again and thenhit connect., then the Wireless Network properties window opens up and I caninsert my Network Key again after I uncheck the "The key is providedautomatically" box. I enter the key and hit the OK button. I still do notget a connection, so I reboot the machine, and wait for about 30 seconds andthe machine synchs up because the little RED X under the icon has disappeared.Now the machine will hook to the internet as long as I want to, but sometimeswhen I turn the machine on it will not synch, so I go through the abovesequence again. The secret is once you have entered your key and ask for themachine to synch up you have to reboot. Why? I do not exactly know, but Isuspect that the WiFi driver looses it You may also wantto look at the TIP http://www.fixya.com/support/r7679654-sylvania_syneto7526_wirless_keyboard To make your knowledge complete