Black Screen - "Mainboard Problem". Please help me out!
crwdns2934249:0crwdne2934249:0:
hello.
please help me fix this laptop.
after power on everything works but nothing shows up. some times after 10 or more power on finally it gives the display. but after a restart it dies again.
i have tried this:
-connected laptop to a monitor through VGA output, but nothing showed up.
-i removed ati graphic chip from the main board using hot air gun in order to force the laptop to use cpu graphic. and still nothing shows up.
-cmos battery gives 3v properly.
-i replaced cpu, ram and hard disk.
and now out of hope i'm seeking international help and advise. - Please help me out!
i have a multimeter, can someone tell me where should i look???