Yuma

what item u have changed for your computer?@@
whole changed?(buy a new one)
or just changed a few part?
can u show me your computer set? [CPU/display/harddisc)
is your computer rams all are the same brand AND same ratio?
for example, if u put a two brand ram in the computer
it can run but easy hang ,even they are same brand and same ratio
but it still a chance to hang if they are not the same time release from factory
(so better buy ram package if u want to change ram)

Yuma

SO U USE 4 SLOT RAM OR JUST USE 1 AND 3 and leave slot 2 and 4?
i guess the ram problem.....
CPU too hot will also make the game hang
as u use new display card and power supply
i think this two parts should be ok...

u can go to buy a USB FAN (very cheap! just use USB slot to get power)
then open your computer CASE and turn on the fan to test EQ
if u can play EQ more than 1 hour
it should be the CPU too hot  problem...

u can also run the anti -virus tool to check virsu  and kill some useless file in comp
it should be helpful to run EQ