Lenovo H520s - Replacing the graphic card

Step8.SlidethenliftthePowersupplyoutofchassis.
Step9.Installthenewpowersupply：
a.Lineuptheholesonthenewpowersupplywithmountingholesontherearofthechassisand
secureittothechassiswiththe3screws.
b.Connectthepowercablestotheconnectorsonthemotherboard.
Step10.Reattachthefrontbezel,computercover.
Replacingthegraphiccard
Toreplacethegraphiccard:
Step1.Removeanymedia(disks,CDs,DVDs,ormemorycards)fromthedrives,shutdowntheoperating
system,andturnoffthecomputerandallattacheddevices.
Step2.Unplugallpowercordsfromelectricaloutlets.
Step3.Disconnectallcablesattachedtothecomputer.Thisincludespowercords,input/output(I/O)
cables,andanyothercablesthatareconnectedtothecomputer.Referto“Leftandrightview”
and“Rearview”forhelpwithlocatingthevariousconnectors.
Step4.Removethecomputercover.Referto“Removingthecomputercover”.
Chapter8.Replacinghardware35