LAPTOP SOME TIME START AND SOME TIME DOES NOT

[shaurya computers]

BRAND : PACKARD BELL
JE40-HR-DISCRETE-UMA

FIRST CHECK 3/5 REGULATOR IC PU4103 (RTM8223L)
FOUND 3.3 VOLT WAS MISSING.
AGAIN CHECK 3.3 VOLT WAS PRESENT AND IT HAPPENS MANY TIMES. SOME TIME PRESENT AND SOME TIME DOES NOT.
CHANGE PU4103 (3/5 REGULATOR IC) BUT PROBLEM WAS STILL SAME
FINAL CHANGE THE CAPACITOR PTC4101 (220 MFD 6.3V) WHICH IS CONNECTED BETWEEN 3.3 VOLT POWER AND GROUND AFTER THE COIL PL410.
FINALLY THE PROBLEM SOLVED AND LAPTOP IS WORKING