Disassembly Dell G3 3579

If you are making the laptop disassembly for the first time, pay attention to this tutorial — First time repairing

What we do in this guide:

  • fix overheating laptop
  • replacement thermal paste in laptop
  • upgrade or replace the hard drive
  • upgrade m.2 SSD
  • RAM upgrade
  • battery replacement
  • replace wifi card
  • reset CMOS settings / replace bios battery

Unscrew all the screws on the bottom of the notebook. Use a plastic tool to avoid damage when opening the case of the laptop.

disassembly Dell G3 step 1
Step 1

Disconnect the battery cable from the laptop’s motherboard.

Disconnecting the battery from the motherboard is done in order to remove the electric charge from the motherboard. After switching off, wait for a while until the residual charge on the motherboard disappears.

battery disconnect Dell G3 step-2
Step 2

Dell G3 Memory Upgrade

Dell G3 laptop has 2 slots of DDR4 memory. 32Gb maximum memory capacity of the Dell G3. To install RAM, insert the memory module at an angle of 45% and press until the final fixation. To remove RAM, pull two latches here to pop the Memory module up at 45 angles, and then pull out the module at that angle.

upgrade ram memory Dell G3
32Gb maximum memory

Upgrade M.2 SSD Dell G3

To upgrade or replace m2 SSD drive, unscrew one screw and remove it.

upgrade m2 ssd Dell G3
m2 ssd is located on the right side near the battery

Battery replacement in Dell G3 laptop

To remove or replace the battery, you need to unscrew the 5 screws and lift up the battery.

Replaceable Battery Dell 56Wh Type 33YDH 15.2V 3500mAh

replace battery Dell G3
Battery Dell 56Wh 33YDH

How to replace Hard Drive on Dell G3

For upgrade or replace the hard drive, you must disconnect the hard drive cable from the motherboard and unscrew the 2 screws. Next, unscrew the 4 screws on the ends of the hard drive and remove the HDD from the cover.

replace hdd Dell G3
The hard drive is located on the left side near the battery

How to replace thermal grease in a Dell G3 laptop

To replace the thermal paste, we need to remove the cooling systems, for this, unscrew the 8 screws marked in the yellow circles in the photo below.

replace thermal paste Dell G3
unscrew the 8 screws marked in the yellow circles

Next, lift up the thermal tubes and clean the CPU and GPU from the old thermal paste, and remove the old thermal grease from the thermotubes.

remove old thermal paste

A new thermal grease is applied in a thin and even layer over the entire surface of the processor chip and video chip. After that, install the cooling system and screw back all the screws.

Replacement WiFi card in Dell G3 laptop

To replace the WiFi card, you need to unscrew one screw, then remove the plastic cap and turn off the wifi antennas from the wifi card. Now you can remove and replace the wifi card in your laptop. In Dell G3579 installed Intel 9462NGW wireless module.

replace wifi module Dell G3
Intel Dual Band Wireless-AC 9462 (9462NGW)

Reset BIOS settings on Dell G3 laptop

To force reset BIOS settings, disconnect the BIOS battery on the motherboard and wait a few minutes.This method is useful in cases where the laptop freezes during the initialization phase of laptop parts and it is impossible to go into BIOS settings.

cmos bios reset Dell G3
Bios Battery Location

If the laptop constantly resets the date and time settings, it means the battery is completely discharged and needs to be replaced.