Problem Possible Causes Diagnosis
1 No Power adaptor cheack adaptor out put
power socket any phical damge of power socket
mother board cheack liquide ,burned or damge
on m/b cheack the voltages
power on swich check continuty of swich
check the screen with new one
2 No Display ram issue cheack the ram clean and reconect
graphic issue fungus on ram slot
cabel issue graphic ic over heating
screen issue cheack cabel continutity
3 No HDD HDD ISSUE RE CONNECT THE HDD
HDD CONNECTOR RESOLDER THE CONNECTOR
MOTHER BOARD ISSUE CHECK THE VOLTAGES
Change in BIOS Settings
4 CD/DVD Not Working DRIVE ISSUE RE CONNECT THE DRIVE
DRIVER ISSUE UPGRADE THE SOFTE WARE
& FIREWARE
BIOS SETTING CHEACK THE SETTING
ON THE BIOS
DRY ON THE MOTHER BOARD CHECK IT FOR THE DRY
5 USB Not Working PHISHCAL DAMAGES REMOVE THE PHISICHCAL SHORT USB
FUSIBLE RESISTOR FAILURE CHECK THE CONTINUTY
OF FUSE
USB CONTROLING IC FAILURE TEST THE VOLTAGES
ON THE IC
DRY/LOOS CONTACT CHEACK IF ANY PHISHICAL LOOS /DRY THE BOARD
Loose Contact
6 Fuzzy Display PHISHCAL DAMAGES REMOVE THE PHISICHCAL SHORT USB
USB CONTROLING IC FAILURE TEST THE VOLTAGES
ON THE IC
1 No Power adaptor cheack adaptor out put
power socket any phical damge of power socket
mother board cheack liquide ,burned or damge
on m/b cheack the voltages
power on swich check continuty of swich
check the screen with new one
2 No Display ram issue cheack the ram clean and reconect
graphic issue fungus on ram slot
cabel issue graphic ic over heating
screen issue cheack cabel continutity
3 No HDD HDD ISSUE RE CONNECT THE HDD
HDD CONNECTOR RESOLDER THE CONNECTOR
MOTHER BOARD ISSUE CHECK THE VOLTAGES
Change in BIOS Settings
4 CD/DVD Not Working DRIVE ISSUE RE CONNECT THE DRIVE
DRIVER ISSUE UPGRADE THE SOFTE WARE
& FIREWARE
BIOS SETTING CHEACK THE SETTING
ON THE BIOS
DRY ON THE MOTHER BOARD CHECK IT FOR THE DRY
5 USB Not Working PHISHCAL DAMAGES REMOVE THE PHISICHCAL SHORT USB
FUSIBLE RESISTOR FAILURE CHECK THE CONTINUTY
OF FUSE
USB CONTROLING IC FAILURE TEST THE VOLTAGES
ON THE IC
DRY/LOOS CONTACT CHEACK IF ANY PHISHICAL LOOS /DRY THE BOARD
Loose Contact
6 Fuzzy Display PHISHCAL DAMAGES REMOVE THE PHISICHCAL SHORT USB
USB CONTROLING IC FAILURE TEST THE VOLTAGES
ON THE IC
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