Is this A4tech mouse and keyboard the wireless type?
If so, some possibilities;
1] Check the batteries.
2] Is the wireless receiver being blocked by anything?
3] I understand that some cordless phones transmit on the same wavelength as the wireless keyboard and mouse. Do you have a cordless phone nearby?
If none of those, then try an elimination test, eg, test the keyboard and mouse on another computer, and then test another wireless keyboard/mouse/receiver on this computer.
I hope that helps.
Sometimes (not always) when i turn on my pc, everything seems fine, i turn on the browser, go to facebook using the drop down menu, autofill the username and password..........
until I just pressed on the keyboard to type something....
the mouse and keyboard stops working. after I restart the computer, both works normally.
what I found out about this problem is that, one day I turned on the computer, I went to device manager and the keyboard is missing, so when I clicked on anything on the keyboard, both keyboard and mouse stops working. again after restarting when the keyboard is there (on the device manager) no problem occurs.
so why does this happen
Specs: Windows XP, A4tech mouse and keyboard