after rooting,I cant install some apps regarding to tools and productivity I have rooted(micromax funbook p280) with root master after I had unrooted my phone with z4root.after rebooting I am facing this problem.on storage it shows ram is full (available 0.00 bytes) after everytime I shut down when power is on it is reseted.please help me.
Factory Reset Your Device
If your issue is not resolved than flash the stock ROM with sp flash tools


HERE is the tutorial for flashing stock rom.


  Step 1: Download and install Android USB Drivers on your computer. In case Android USB Drivers are already installed on your Computer then skip this step.
  
  Step 2: Power Off your Android Smartphone and remove the Battery (if it is removable).
  
  Step 3: Download the Stock Rom or Custom Rom that you want to Flash on your Android Smartphone and extract it on your Computer.
  
  Step 4: Download and Extract Smart Phone Flash Tool on Your Computer. After Extracting you will be able to see the following files:
  
  Step 5: Now Open Flash_tool.exe (you will find this from the extracted files in Step#6).
  
  Step 6: Once Smart Phone Flash Tool is launched, Click on the Scatter-Loading Button from the Right.
  
  Step 7: Now, Locate the Scatter File (you will find this file in the Stock Rom or any Custom Rom).
  
  Step 8: Now, Click on the Download Button to begin the Flashing Process.
  
  Step 9: Now, Connect your Smartphone to the Computer using USB Cable (without battery- if it is removable). After connecting the device to the computer Press Volume Down or Volume Up key, so that your computer easily detect your smartphone.
  
  Step 10: Once Flashing is completed, a Green Ring will appear.
  
  Step 11: Close the Smart Phone Flash Tool on your computer and disconnect your Android Smartphone from the computer.
  
  Congratulations, Now your Android Smartphone is successfully running the Stock Rom you have Downloaded.