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There are 3 missing drivers after installing windows 7 on your
acer aspire 5750 laptop. 2 are
Base system device and 1 is
Ethernet controller. The
correct driver for the
ethernet controller is
Broadcom netlink (TM) gigabit ethernet. Download it here. The
base system device needs the operating system updating. For windows 8 and 10 there are 2 missing drivers. Again the
base system device needs the operating system updating. The other device is PCI Simple communications controller and the correct driver is Intel (R) management engine interface and you can need to update the driver in windows device manager. Update drivers in device manager on windows 10.
Don't forget the correct power supply for this laptop is 19v 3.42a 5.5mm x 2.7mm