System Troubleshooting steps

Task 1:

Issue: System shows some boot files are missing or corrupted

           Error Code: 0x000f, e, 2721

Solution:

I tried to install OS but while installing it show some error like

Then the problem is in Memory (RAM), so I installed OS by installing RAM from working system

Task 2:

Issue: System creates some beep sound (3 continuous beeps) or CPU is powered on but monitor is not displaying

Steps to rectify or clear the issue:

The first step is to try by removing RAM, if there is 2 RAM first try by booting with the 1^st RAM and then 2^nd ,if it doesn’t clears then follow the next step..

The second step is to remove the CMOS battery and wait for 2-5 minutes and put it back again and power on the system..

Then after also if issue remains same then the problem is with MOTHERBOARD or SMPS