First we need the actual model number. I *suspect* you mean a R11 aka R3-131T in which case we need the next four digits to identify the model (R3-131T-xxxx) - is the case blue ?
Next we need to know the Operating System aand some information. Press the Windows key and "R". Type MSINFO32. Note "OS Name" and "Version" also "BIOS Version/Date", and "Total Physical Memory".
BTW If this is a Chromebook, we have a different problem.